{"id":3921,"date":"2026-08-03T07:38:49","date_gmt":"2026-08-03T07:38:49","guid":{"rendered":"https:\/\/www.rlfasteners.com\/?p=3921"},"modified":"2026-09-02T07:57:28","modified_gmt":"2026-09-02T07:57:28","slug":"bolt-preload-calculation-guide","status":"publish","type":"post","link":"https:\/\/www.rlfasteners.com\/ja\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/","title":{"rendered":"\u30dc\u30eb\u30c8\u4e88\u5727\u8a08\u7b97\uff1a\u30dc\u30eb\u30c8\u4e88\u5727\u306e\u640d\u5931\u306f\u3001\u9ad8\u632f\u52d5\u81ea\u52d5\u8eca\u7528\u9014\u3067\u30b8\u30e7\u30a4\u30f3\u30c8\u75b2\u52b4\u3092\u5f15\u304d\u8d77\u3053\u3059\u306e\u306f\u306a\u305c\u3067\u3059\u304b\uff1f"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_69_1 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u6b21<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"\u76ee\u6b21\u3092\u5207\u308a\u66ff\u3048\u308b\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">\u30c8\u30b0\u30eb<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.rlfasteners.com\/ja\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#Quick_Answer\" title=\"\u30af\u30a4\u30c3\u30af\u30a2\u30f3\u30b5\u30fc\uff1a\">\u30af\u30a4\u30c3\u30af\u30a2\u30f3\u30b5\u30fc\uff1a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.rlfasteners.com\/ja\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#Why_is_preload_the_hidden_force_in_an_automotive_joint\" title=\"\u81ea\u52d5\u8eca\u7528\u30b8\u30e7\u30a4\u30f3\u30c8\u306b\u304a\u3051\u308b\u30d7\u30ea\u30ed\u30fc\u30c9\u306f\u306a\u305c\u96a0\u308c\u305f\u529b\u306a\u306e\u304b\uff1f\">\u81ea\u52d5\u8eca\u7528\u30b8\u30e7\u30a4\u30f3\u30c8\u306b\u304a\u3051\u308b\u30d7\u30ea\u30ed\u30fc\u30c9\u306f\u306a\u305c\u96a0\u308c\u305f\u529b\u306a\u306e\u304b\uff1f<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.rlfasteners.com\/ja\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#What_happens_when_preload_is_lost\" title=\"\u30d7\u30ea\u30ed\u30fc\u30c9\u304c\u5931\u308f\u308c\u308b\u3068\u3069\u3046\u306a\u308b\u304b\uff1f\">\u30d7\u30ea\u30ed\u30fc\u30c9\u304c\u5931\u308f\u308c\u308b\u3068\u3069\u3046\u306a\u308b\u304b\uff1f<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.rlfasteners.com\/ja\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#What_is_bolt_preload\" title=\"\u30dc\u30eb\u30c8\u306e\u30d7\u30ea\u30ed\u30fc\u30c9\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f\">\u30dc\u30eb\u30c8\u306e\u30d7\u30ea\u30ed\u30fc\u30c9\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.rlfasteners.com\/ja\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#Why_preload_affects_fatigue\" title=\"\u30d7\u30ea\u30ed\u30fc\u30c9\u304c\u75b2\u52b4\u306b\u5f71\u97ff\u3059\u308b\u7406\u7531\">\u30d7\u30ea\u30ed\u30fc\u30c9\u304c\u75b2\u52b4\u306b\u5f71\u97ff\u3059\u308b\u7406\u7531<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.rlfasteners.com\/ja\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#How_is_bolt_preload_calculated\" title=\"\u30dc\u30eb\u30c8\u306e\u30d7\u30ea\u30ed\u30fc\u30c9\u306f\u3069\u306e\u3088\u3046\u306b\u8a08\u7b97\u3055\u308c\u307e\u3059\u304b\uff1f\">\u30dc\u30eb\u30c8\u306e\u30d7\u30ea\u30ed\u30fc\u30c9\u306f\u3069\u306e\u3088\u3046\u306b\u8a08\u7b97\u3055\u308c\u307e\u3059\u304b\uff1f<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.rlfasteners.com\/ja\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#Why_the_calculation_is_only_an_estimate\" title=\"\u8a08\u7b97\u304c\u63a8\u5b9a\u5024\u306b\u3059\u304e\u306a\u3044\u7406\u7531\">\u8a08\u7b97\u304c\u63a8\u5b9a\u5024\u306b\u3059\u304e\u306a\u3044\u7406\u7531<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.rlfasteners.com\/ja\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#What_preload_mistakes_can_cause_joint_problems\" title=\"\u30d7\u30ea\u30ed\u30fc\u30c9\u306e\u9593\u9055\u3044\u304c\u30b8\u30e7\u30a4\u30f3\u30c8\u306e\u554f\u984c\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\">\u30d7\u30ea\u30ed\u30fc\u30c9\u306e\u9593\u9055\u3044\u304c\u30b8\u30e7\u30a4\u30f3\u30c8\u306e\u554f\u984c\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.rlfasteners.com\/ja\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#Too_little_preload\" title=\"\u30d7\u30ea\u30ed\u30fc\u30c9\u4e0d\u8db3\">\u30d7\u30ea\u30ed\u30fc\u30c9\u4e0d\u8db3<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.rlfasteners.com\/ja\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#Too_much_preload\" title=\"\u30d7\u30ea\u30ed\u30fc\u30c9\u904e\u591a\">\u30d7\u30ea\u30ed\u30fc\u30c9\u904e\u591a<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.rlfasteners.com\/ja\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#Friction_and_assembly_conditions\" title=\"\u6469\u64e6\u3068\u7d44\u307f\u7acb\u3066\u6761\u4ef6\">\u6469\u64e6\u3068\u7d44\u307f\u7acb\u3066\u6761\u4ef6<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.rlfasteners.com\/ja\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#How_does_CNRL_support_consistent_automotive_fastener_performance\" title=\"CNRL\u306f\u3001\u4e00\u8cab\u3057\u305f\u81ea\u52d5\u8eca\u7528\u30d5\u30a1\u30b9\u30ca\u30fc\u306e\u6027\u80fd\u3092\u3069\u306e\u3088\u3046\u306b\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u304b\uff1f\">CNRL\u306f\u3001\u4e00\u8cab\u3057\u305f\u81ea\u52d5\u8eca\u7528\u30d5\u30a1\u30b9\u30ca\u30fc\u306e\u6027\u80fd\u3092\u3069\u306e\u3088\u3046\u306b\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u304b\uff1f<\/a><\/li><\/ul><\/nav><\/div>\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Quick_Answer\"><\/span><strong>\u7c21\u5358\u306a\u7b54\u3048<\/strong>:<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30dc\u30eb\u30c8\u306e\u30d7\u30ea\u30ed\u30fc\u30c9\u3068\u306f\u3001\u7de0\u3081\u4ed8\u3051\u4e2d\u306b\u30d5\u30a1\u30b9\u30ca\u30fc\u306b\u767a\u751f\u3059\u308b\u5f35\u529b\u306e\u3053\u3068\u3067\u3059\u3002\u3053\u308c\u306f\u3001\u63a5\u5408\u3055\u308c\u305f\u90e8\u54c1\u3092\u5727\u7e2e\u3057\u3001\u632f\u52d5\u3084\u52a0\u3048\u3089\u308c\u305f\u8377\u91cd\u306b\u3088\u308b\u305d\u308c\u3089\u306e\u5206\u96e2\u3092\u9632\u304e\u307e\u3059\u3002\u30d7\u30ea\u30ed\u30fc\u30c9\u304c\u6e1b\u5c11\u3059\u308b\u3068\u3001\u30b8\u30e7\u30a4\u30f3\u30c8\u306f\u5404\u8377\u91cd\u30b5\u30a4\u30af\u30eb\u4e2d\u306b\u52d5\u304d\u59cb\u3081\u3001\u958b\u304d\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u30b5\u30a4\u30af\u30eb\u8377\u91cd\u306f\u30dc\u30eb\u30c8\u306b\u3055\u3089\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u3001\u5fdc\u529b\u30ec\u30d9\u30eb\u3092\u5897\u52a0\u3055\u305b\u3001\u75b2\u52b4\u7834\u58ca\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002\u30dc\u30eb\u30c8\u306e\u30d7\u30ea\u30ed\u30fc\u30c9\u8a08\u7b97\u306f\u3001\u7279\u5b9a\u306e\u30c8\u30eb\u30af\u304c\u52a0\u3048\u3089\u308c\u305f\u3068\u304d\u306b\u767a\u751f\u3059\u308b\u30af\u30e9\u30f3\u30d7\u529b\u3092\u6c7a\u5b9a\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u30d7\u30ed\u30bb\u30b9\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u3001\u5927\u5e45\u306a\u5909\u52d5\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u306e\u3042\u308b\u591a\u304f\u306e\u8981\u56e0\u304c\u3042\u308a\u307e\u3059\u3002CNRL\u306f\u3001\u30a8\u30f3\u30b8\u30f3\u3001\u30b7\u30e3\u30fc\u30b7\u3001\u30c8\u30e9\u30f3\u30b9\u30df\u30c3\u30b7\u30e7\u30f3\u3001\u305d\u306e\u4ed6\u306e\u7528\u9014\u5411\u3051\u306e\u81ea\u52d5\u8eca\u7528\u30d5\u30a1\u30b9\u30ca\u30fc\u3092\u88fd\u9020\u3057\u3066\u3044\u307e\u3059\u3002\u81ea\u52d5\u8eca\u7523\u696d\u5411\u3051\u306e\u751f\u7523\u30b7\u30b9\u30c6\u30e0\u306f\u3001 <a href=\"https:\/\/www.rlfasteners.com\/ja\/blog\/industry\/iatf-16949-certification-fastener-manufacturers\/\" target=\"_blank\" rel=\"noreferrer noopener\">IATF16949<\/a> \u898f\u683c\u306b\u8a8d\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_is_preload_the_hidden_force_in_an_automotive_joint\"><\/span>\u81ea\u52d5\u8eca\u7528\u30b8\u30e7\u30a4\u30f3\u30c8\u306b\u304a\u3051\u308b\u30d7\u30ea\u30ed\u30fc\u30c9\u306f\u306a\u305c\u96a0\u308c\u305f\u529b\u306a\u306e\u304b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6a5f\u68b0\u7684\u306a\u30b8\u30e7\u30a4\u30f3\u30c8\u306f\u3001\u30d5\u30a1\u30b9\u30ca\u30fc\u304c\u63a5\u5408\u9762\u306b\u5f35\u529b\u3092\u304b\u3051\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u6a5f\u80fd\u3057\u3001\u30b8\u30e7\u30a4\u30f3\u30c8\u306b\u8377\u91cd\u304c\u304b\u304b\u308b\u524d\u3067\u3082\u305d\u308c\u3089\u3092\u5727\u7e2e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b7\u30b9\u30c6\u30e0\u306e\u52d5\u4f5c\u4e2d\u3001\u632f\u52d5\u3001\u904b\u8ee2\u4e2d\u306e\u885d\u6483\u3001\u30a8\u30f3\u30b8\u30f3\u306e\u52d5\u304d\u3001\u30c8\u30eb\u30af\u306e\u5909\u52d5\u304c\u30b8\u30e7\u30a4\u30f3\u30c8\u306b\u4f5c\u7528\u3057\u307e\u3059\u3002\u30d7\u30ea\u30ed\u30fc\u30c9\u304c\u5341\u5206\u306b\u3042\u308b\u5834\u5408\u3001\u8377\u91cd\u306e\u591a\u304f\u306f\u3001\u30dc\u30eb\u30c8\u3067\u306f\u306a\u304f\u3001\u30b8\u30e7\u30a4\u30f3\u30c8\u306e\u5727\u7e2e\u3055\u308c\u305f\u90e8\u54c1\u306b\u304b\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u75b2\u52b4\u306f\u5fdc\u529b\u7bc4\u56f2\u306b\u5927\u304d\u304f\u4f9d\u5b58\u3059\u308b\u305f\u3081\u3001\u3053\u308c\u306f\u91cd\u8981\u3067\u3059\u3002\u9069\u5207\u306b\u30d7\u30ea\u30ed\u30fc\u30c9\u3055\u308c\u305f\u30b8\u30e7\u30a4\u30f3\u30c8\u306f\u3001\u30dc\u30eb\u30c8\u3078\u306e\u8ffd\u52a0\u306e\u30b5\u30a4\u30af\u30eb\u5fdc\u529b\u3092\u4f4e\u304f\u6291\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_happens_when_preload_is_lost\"><\/span>\u30d7\u30ea\u30ed\u30fc\u30c9\u304c\u5931\u308f\u308c\u308b\u3068\u3069\u3046\u306a\u308b\u304b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u975e\u5e38\u306b\u4e88\u6e2c\u53ef\u80fd\u3067\u3059\u3002\u30d7\u30ea\u30ed\u30fc\u30c9\u304c\u6e1b\u5c11\u3059\u308b\u3068\u3001\u30b8\u30e7\u30a4\u30f3\u30c8\u9593\u306e\u30af\u30e9\u30f3\u30d7\u529b\u304c\u4f4e\u4e0b\u3057\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u52d5\u7684\u306a\u8377\u91cd\u304c\u304b\u304b\u308b\u3068\u3001\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u9762\u304c\u6ed1\u3063\u305f\u308a\u3001\u5206\u96e2\u3057\u305f\u308a\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3088\u308a\u5927\u304d\u306a\u8377\u91cd\u304c\u3001\u5f15\u5f35\u307e\u305f\u306f\u66f2\u3052\u306e\u3044\u305a\u308c\u304b\u306e\u5f62\u3067\u30dc\u30eb\u30c8\u306b\u304b\u304b\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u5fdc\u529b\u30ec\u30d9\u30eb\u304c\u5897\u52a0\u3057\u3001\u75b2\u52b4\u3084\u4e80\u88c2\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u306f\u3001\u30a8\u30f3\u30b8\u30f3\u30de\u30a6\u30f3\u30c8\u3001\u30d1\u30ef\u30fc\u30c8\u30ec\u30a4\u30f3\u30a2\u30bb\u30f3\u30d6\u30ea\u3001\u30b5\u30b9\u30da\u30f3\u30b7\u30e7\u30f3\u90e8\u54c1\u3001\u6392\u6c17\u30b7\u30b9\u30c6\u30e0\u3001\u30b7\u30e3\u30fc\u30b7\u63a5\u7d9a\u306e\u5206\u91ce\u3067\u7279\u306b\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_bolt_preload\"><\/span><strong>\u30dc\u30eb\u30c8\u306e\u30d7\u30ea\u30ed\u30fc\u30c9\u3068\u306f<\/strong>?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u7de0\u3081\u4ed8\u3051\u5f8c\u306b\u30dc\u30eb\u30c8\u306b\u767a\u751f\u3059\u308b\u8ef8\u65b9\u5411\u306e\u5f15\u5f35\u529b\u3067\u3059\u3002\u3053\u306e\u5f15\u5f35\u529b\u306b\u3088\u308a\u3001\u30dc\u30eb\u30c8\u306f\u308f\u305a\u304b\u306b\u4f38\u3073\u307e\u3059\u3002\u3082\u30461\u3064\u306e\u73fe\u8c61\u306f\u3001\u63a5\u7d9a\u3055\u308c\u305f2\u3064\u306e\u8868\u9762\u304c\u30dc\u30eb\u30c8\u306b\u3088\u3063\u3066\u5727\u7e2e\u3055\u308c\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u5727\u7e2e\u306b\u3088\u308a\u3001\u30af\u30e9\u30f3\u30d7\u529b\u3068\u547c\u3070\u308c\u308b\u8377\u91cd\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u5358\u7d14\u306b\u8377\u91cd\u304c\u304b\u304b\u3063\u305f\u30b8\u30e7\u30a4\u30f3\u30c8\u3067\u306f\u3001\u30d7\u30ea\u30ed\u30fc\u30c9\u3068\u30af\u30e9\u30f3\u30d7\u529b\u306f\u5927\u304d\u3055\u304c\u7b49\u3057\u304f\u3001\u65b9\u5411\u304c\u53cd\u5bfe\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_preload_affects_fatigue\"><\/span>\u30d7\u30ea\u30ed\u30fc\u30c9\u304c\u75b2\u52b4\u306b\u5f71\u97ff\u3059\u308b\u7406\u7531<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5341\u5206\u306a\u30d7\u30ea\u30ed\u30fc\u30c9\u306f\u3001\u30b8\u30e7\u30a4\u30f3\u30c8\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u304c\u5727\u7e2e\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002\u3053\u306e\u3088\u3046\u306b\u3001\u5206\u96e2\u306f\u306a\u304f\u306a\u308a\u3001\u90e8\u54c1\u9593\u306e\u6469\u64e6\u304c\u52a0\u3048\u3089\u308c\u305f\u5916\u90e8\u8377\u91cd\u306e\u307b\u3068\u3093\u3069\u3092\u51e6\u7406\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d7\u30ea\u30ed\u30fc\u30c9\u304c\u4f4e\u3059\u304e\u308b\u5834\u5408\u3001\u30b8\u30e7\u30a4\u30f3\u30c8\u306f\u5404\u30b5\u30a4\u30af\u30eb\u3067\u958b\u9589\u3057\u59cb\u3081\u307e\u3059\u3002\u30dc\u30eb\u30c8\u304c\u53d7\u3051\u308b\u8377\u91cd\u306f\u5927\u5e45\u306b\u5897\u52a0\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b8\u30e7\u30a4\u30f3\u30c8\u306e\u632f\u52d5\u306f\u3001\u30d7\u30ea\u30ed\u30fc\u30c9\u4f4e\u4e0b\u306e\u539f\u56e0\u306e\u4f8b\u3068\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u6a2a\u65b9\u5411\u306e\u52d5\u304d\u306f\u3001\u30b8\u30e7\u30a4\u30f3\u30c8\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3068\u306d\u3058\u306e\u56de\u8ee2\u306b\u3088\u308b\u7de9\u307f\u306b\u3064\u306a\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_is_bolt_preload_calculated\"><\/span>\u30dc\u30eb\u30c8\u306e\u30d7\u30ea\u30ed\u30fc\u30c9\u306f\u3069\u306e\u3088\u3046\u306b\u8a08\u7b97\u3055\u308c\u307e\u3059\u304b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u57fa\u672c\u7684\u306a <strong>\u30dc\u30eb\u30c8\u30d7\u30ea\u30ed\u30fc\u30c9\u5f0f<\/strong> \u306f\u3001\u7de0\u3081\u4ed8\u3051\u30c8\u30eb\u30af\u3001\u30dc\u30eb\u30c8\u5f84\u3001\u304a\u3088\u3073\u30ca\u30c3\u30c8\u4fc2\u6570\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Fi = T \/ (K \u00d7 d)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u3053\u3067\u3001Fi\u306f\u63a8\u5b9a\u30d7\u30ea\u30ed\u30fc\u30c9\u3001T\u306f\u7de0\u3081\u4ed8\u3051\u30c8\u30eb\u30af\u3001K\u306f\u30ca\u30c3\u30c8\u4fc2\u6570\u3001d\u306f\u516c\u79f0\u30dc\u30eb\u30c8\u5f84\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u305f\u3068\u3048\u3070\u3001\u76ee\u6a19\u30d7\u30ea\u30ed\u30fc\u30c9\u304c50 kN\u306eM12\u30af\u30e9\u30b910.9\u30dc\u30eb\u30c8\u3092\u8003\u3048\u307e\u3059\u3002\u30ca\u30c3\u30c8\u4fc2\u65700.20\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T = K \u00d7 d \u00d7 Fi<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T = 0.20 \u00d7 0.012 \u00d7 50,000 = 120 N\u00b7m<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3057\u305f\u304c\u3063\u3066\u3001120 N\u00b7m\u306f\u3001\u4eee\u5b9a\u3055\u308c\u305f\u6761\u4ef6\u4e0b\u3067\u7d0450 kN\u306e\u30d7\u30ea\u30ed\u30fc\u30c9\u3092\u63a8\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Why_the_calculation_is_only_an_estimate\"><\/span>\u8a08\u7b97\u304c\u63a8\u5b9a\u5024\u306b\u3059\u304e\u306a\u3044\u7406\u7531<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c8\u30eb\u30af\u306f\u30dc\u30eb\u30c8\u306e\u5f35\u529b\u3092\u76f4\u63a5\u6e2c\u5b9a\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u52a0\u3048\u3089\u308c\u305f\u30c8\u30eb\u30af\u306e\u591a\u304f\u306f\u3001\u306d\u3058\u3068\u8ef8\u53d7\u306e\u6469\u64e6\u306b\u3088\u3063\u3066\u6d88\u8cbb\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ca\u30c3\u30c8\u4fc2\u6570\u306f\u3001\u6f64\u6ed1\u3001\u3081\u3063\u304d\u3001\u8868\u9762\u4ed5\u4e0a\u3052\u306b\u3088\u3063\u3066\u5909\u5316\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u7814\u7a76\u306b\u3088\u308b\u3068\u3001\u30c8\u30eb\u30af\u304c\u614e\u91cd\u306b\u5236\u5fa1\u3055\u308c\u3066\u3044\u3066\u3082\u3001\u3053\u308c\u3089\u306e\u5909\u5316\u304c\u5927\u5e45\u306a\u30d7\u30ea\u30ed\u30fc\u30c9\u8aa4\u5dee\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308b\u3053\u3068\u304c\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u91cd\u8981\u306a\u30b8\u30e7\u30a4\u30f3\u30c8\u306e\u5834\u5408\u3001\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u89d2\u5ea6\u5236\u5fa1\u307e\u305f\u306f\u76f4\u63a5\u5f35\u529b\u6e2c\u5b9a\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3088\u308a\u8a73\u7d30\u306a\u30b8\u30e7\u30a4\u30f3\u30c8\u8a08\u7b97\u3067\u306f\u3001\u306d\u3058\u306e\u5f62\u72b6\u3001\u6469\u64e6\u3001\u30b8\u30e7\u30a4\u30f3\u30c8\u306e\u525b\u6027\u3082\u8003\u616e\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_preload_mistakes_can_cause_joint_problems\"><\/span>\u30d7\u30ea\u30ed\u30fc\u30c9\u306e\u9593\u9055\u3044\u304c\u30b8\u30e7\u30a4\u30f3\u30c8\u306e\u554f\u984c\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d7\u30ea\u30ed\u30fc\u30c9\u304c\u4e0d\u8db3\u3057\u3066\u3044\u3066\u3082\u904e\u5270\u3067\u3042\u3063\u3066\u3082\u3001\u554f\u984c\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u6b63\u3057\u3044\u5024\u306f\u3001\u30d5\u30a1\u30b9\u30ca\u30fc\u3001\u30b8\u30e7\u30a4\u30f3\u30c8\u306e\u8a2d\u8a08\u3001\u304a\u3088\u3073\u30b5\u30fc\u30d3\u30b9\u6761\u4ef6\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Too_little_preload\"><\/span>\u30d7\u30ea\u30ed\u30fc\u30c9\u4e0d\u8db3<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d7\u30ea\u30ed\u30fc\u30c9\u4e0d\u8db3\u306f\u3001\u30b8\u30e7\u30a4\u30f3\u30c8\u90e8\u6750\u9593\u306e\u6469\u64e6\u30b0\u30ea\u30c3\u30d7\u3092\u4f4e\u4e0b\u3055\u305b\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u632f\u52d5\u306b\u3088\u3063\u3066\u52d5\u304d\u3001\u7de9\u307f\u3001\u30dc\u30eb\u30c8\u306e\u30b5\u30a4\u30af\u30eb\u5fdc\u529b\u304c\u5897\u52a0\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u7d50\u679c\u3068\u3057\u3066\u3001\u75b2\u52b4\u7834\u58ca\u3001\u30b8\u30e7\u30a4\u30f3\u30c8\u306e\u5206\u96e2\u3001\u307e\u305f\u306f\u5bc6\u9589\u3055\u308c\u305f\u30a2\u30bb\u30f3\u30d6\u30ea\u306e\u6f0f\u308c\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Too_much_preload\"><\/span>\u30d7\u30ea\u30ed\u30fc\u30c9\u904e\u591a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d7\u30ea\u30ed\u30fc\u30c9\u904e\u591a\u306f\u3001\u30dc\u30eb\u30c8\u3092\u610f\u56f3\u3057\u305f\u5fdc\u529b\u7bc4\u56f2\u3092\u8d85\u3048\u3066\u62bc\u3057\u51fa\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u306d\u3058\u3092\u640d\u50b7\u3057\u305f\u308a\u3001\u63a5\u7d9a\u3055\u308c\u305f\u90e8\u54c1\u3092\u6b6a\u307e\u305b\u305f\u308a\u3059\u308b\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u3002\u3088\u308a\u9ad8\u5f37\u5ea6\u306e\u30dc\u30eb\u30c8\u3092\u4f7f\u7528\u3057\u3066\u3082\u3001\u554f\u984c\u304c\u81ea\u52d5\u7684\u306b\u89e3\u6c7a\u3055\u308c\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u30b8\u30e7\u30a4\u30f3\u30c8\u306f\u3001\u6b63\u3057\u3044\u30d7\u30ea\u30ed\u30fc\u30c9\u3068\u8377\u91cd\u6761\u4ef6\u3092\u4e2d\u5fc3\u306b\u8a2d\u8a08\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Friction_and_assembly_conditions\"><\/span>\u6469\u64e6\u3068\u7d44\u307f\u7acb\u3066\u6761\u4ef6<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3088\u304f\u3042\u308b\u9593\u9055\u3044\u306f\u3001\u30d5\u30a1\u30b9\u30ca\u30fc\u306e\u5b9f\u969b\u306e\u8868\u9762\u72b6\u614b\u3092\u8003\u616e\u305b\u305a\u306b\u3001\u4e00\u822c\u7684\u306a\u30c8\u30eb\u30af\u5024\u3092\u9069\u7528\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u305f\u3068\u3048\u3070\u3001\u6f64\u6ed1\u3055\u308c\u305f\u30d5\u30a1\u30b9\u30ca\u30fc\u306b\u4e7e\u71e5\u30c8\u30eb\u30af\u5024\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u610f\u56f3\u3057\u305f\u3088\u308a\u3082\u306f\u308b\u304b\u306b\u9ad8\u3044\u30d7\u30ea\u30ed\u30fc\u30c9\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u305f\u3081\u3001\u30c8\u30eb\u30af\u4ed5\u69d8\u306f\u3001\u6307\u5b9a\u3055\u308c\u305f\u30d5\u30a1\u30b9\u30ca\u30fc\u3068\u7d44\u307f\u7acb\u3066\u6761\u4ef6\u306b\u4e00\u81f4\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CNRL\u306e <a href=\"https:\/\/www.rlfasteners.com\/ja\/bolt-grade-markings-and-strength-chart-guide\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u30dc\u30eb\u30c8\u30c8\u30eb\u30af\u30c1\u30e3\u30fc\u30c8\u30ac\u30a4\u30c9<\/a> \u306f\u3001\u30c8\u30eb\u30af\u4ed5\u69d8\u306b\u95a2\u3059\u308b\u8ffd\u52a0\u60c5\u5831\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<style>\n  .product-card {\n    display: flex;\n    align-items: center;\n    justify-content: center;\n    height: 400px;\n    border: 1px solid #ddd;\n    border-radius: 10px;\n    overflow: hidden;\n    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);\n    max-width: 900px;\n    margin: 0 auto;\n    gap: 40px;\n    padding: 20px;\n    box-sizing: border-box;\n  }\n\n  .product-left,\n  .product-right {\n    flex: 1 1 50%;\n    display: flex;\n    flex-direction: column;\n    justify-content: center;\n    align-items: center;\n    text-align: center;\n  }\n\n  .product-left {\n    gap: 20px;\n  }\n\n  .product-title {\n    font-size: 24px;\n    font-weight: 700;\n    color: #b59d53;\n    margin: 0;\n  }\n\n  .product-button {\n    background-color: transparent;\n    color: #b59d53;\n    border: 2px solid #b59d53;\n    padding: 12px 24px;\n    font-size: 15px;\n    border-radius: 6px;\n    cursor: pointer;\n    transition: all 0.3s ease;\n    text-decoration: none;\n    display: inline-block;\n  }\n\n  .product-button:hover {\n    border-color: #333333;\n    color: #333333;\n    transform: scale(1.1);\n  }\n\n  .product-right img {\n    max-width: 100%;\n    max-height: 360px;\n    object-fit: contain;\n    border-radius: 10px;\n  }\n\n  @media (max-width: 768px) {\n    .product-card {\n      flex-direction: column;\n      height: auto;\n      padding: 15px;\n      gap: 15px;\n    }\n\n    .product-left,\n    .product-right {\n      flex: none;\n      width: 100%;\n      text-align: center;\n    }\n\n    .product-right img {\n      max-height: 300px;\n      margin-bottom: 15px;\n    }\n\n    .product-left {\n      order: 2;\n      gap: 10px;\n      align-items: center;\n    }\n\n    .product-right {\n      order: 1;\n    }\n  }\n<\/style>\n\n<div class=\"product-card\">\n  <div class=\"product-right\">\n    <img decoding=\"async\" src=\"https:\/\/www.rlfasteners.com\/wp-content\/uploads\/2022\/07\/%E4%B8%BB%E5%9B%BE-01-7.jpg\" alt=\"\" \/>\n  <\/div>\n  <div class=\"product-left\">\n    <p class=\"product-title\">\u30ab\u30b9\u30bf\u30e0\u30e1\u30a4\u30c9\u306eM7 M12 M24\u306d\u3058\u4ed8\u304d\u30dc\u30eb\u30c8\u3001\u30d4\u30f3\u4ed8\u304dastm\u30dc\u30eb\u30c8\n<\/p>\n    <a href=\"https:\/\/www.rlfasteners.com\/ja\/product\/pin\/\" target=\"_blank\" class=\"product-button\">\u8a73\u7d30\u60c5\u5831<\/a>\n  <\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_does_CNRL_support_consistent_automotive_fastener_performance\"><\/span>CNRL\u306f\u3001\u4e00\u8cab\u3057\u305f\u81ea\u52d5\u8eca\u7528\u30d5\u30a1\u30b9\u30ca\u30fc\u306e\u6027\u80fd\u3092\u3069\u306e\u3088\u3046\u306b\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u304b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a08\u7b97\u3055\u308c\u305f\u30d7\u30ea\u30ed\u30fc\u30c9\u306f\u3001\u30d5\u30a1\u30b9\u30ca\u30fc\u306e\u5bf8\u6cd5\u3001 <a href=\"https:\/\/www.rlfasteners.com\/ja\/blog\/automotive-fastener\/comparison\/fastener-stainless-steel-vs-titanium-fasteners\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u6750\u6599<\/a>, <a href=\"https:\/\/www.rlfasteners.com\/ja\/blog\/automotive-fastener\/what-is-fastener-tensile-strength-and-yield-strength\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u6297\u5f35\u529b<\/a>\u3001\u304a\u3088\u3073\u8868\u9762\u72b6\u614b\u304c\u8a2d\u8a08\u8981\u4ef6\u3068\u4e00\u81f4\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u306e\u307f\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CNRL\u306f\u3001\u30dc\u30eb\u30c8\u3084\u305d\u306e\u4ed6\u306e\u7de0\u7d50\u90e8\u54c1\u3092\u542b\u3080\u3001\u8eca\u4e21\u7528\u9014\u5411\u3051\u306e <a href=\"https:\/\/www.rlfasteners.com\/ja\/blog\/types-of-automotive-fasteners\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u81ea\u52d5\u8eca\u7528\u30d5\u30a1\u30b9\u30ca\u30fc<\/a> \u3092\u88fd\u9020\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u81ea\u52d5\u8eca\u751f\u7523\u306f\u30014.8\u304b\u308912.9\u307e\u3067\u306e\u30d5\u30a1\u30b9\u30ca\u30fc\u5f37\u5ea6\u30af\u30e9\u30b9\u3092\u30ab\u30d0\u30fc\u3057\u3001\u3055\u307e\u3056\u307e\u306a\u76f4\u5f84\u3068\u9577\u3055\u304c\u5229\u7528\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u540c\u793e\u306f\u307e\u305f\u3001IATF 16949\u3001ISO 14001\u3001\u304a\u3088\u3073ISO 45001\u306e\u8a8d\u8a3c\u3092\u7dad\u6301\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u88fd\u9020\u696d\u52d9\u5168\u4f53\u3067\u7ba1\u7406\u3055\u308c\u305f\u751f\u7523\u3068\u54c1\u8cea\u7ba1\u7406\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u81ea\u52d5\u8eca\u7528\u9014\u306e\u5834\u5408\u3001CNRL\u306f\u3001\u7279\u5b9a\u306e\u30b8\u30e7\u30a4\u30f3\u30c8\u7528\u306e\u30d5\u30a1\u30b9\u30ca\u30fc\u3092\u958b\u767a\u3059\u308b\u969b\u306b\u3001\u56f3\u9762\u3001\u4ed5\u69d8\u3001\u304a\u3088\u3073\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u8981\u4ef6\u304b\u3089\u4f5c\u696d\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9069\u5207\u306a\u30d7\u30ea\u30ed\u30fc\u30c9\u306f\u3001\u30c8\u30eb\u30af\u3060\u3051\u3067\u306a\u304f\u3001\u305d\u308c\u4ee5\u4e0a\u306e\u3082\u306e\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002\u30d5\u30a1\u30b9\u30ca\u30fc\u306e\u30b0\u30ec\u30fc\u30c9\u3001\u5f62\u72b6\u3001\u6469\u64e6\u3001\u30b8\u30e7\u30a4\u30f3\u30c8\u306e\u525b\u6027\u3001\u632f\u52d5\u3001\u304a\u3088\u3073\u52d5\u4f5c\u6761\u4ef6\u3059\u3079\u3066\u304c\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.rlfasteners.com\/ja\/contact\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u63a5\u89e6<\/a> CNRL\u306e\u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0\u30c1\u30fc\u30e0\u304c\u3001\u7279\u5b9a\u306e\u7528\u9014\u306b\u304a\u3051\u308b\u30d7\u30ea\u30ed\u30fc\u30c9\u4ed5\u69d8\u3068\u81ea\u52d5\u8eca\u7528\u30d5\u30a1\u30b9\u30ca\u30fc\u306e\u8981\u4ef6\u306b\u3064\u3044\u3066\u8b70\u8ad6\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-fe48e5de wp-block-buttons-is-layout-flex\">\n<div style=\"--wp--block-button--width: 50;\" class=\"wp-block-button has-custom-width wp-block-button__width wp-block-button__width-50\"><a class=\"wp-block-button__link has-white-color has-text-color has-background has-link-color has-medium-font-size has-custom-font-size wp-element-button\" href=\"https:\/\/www.rlfasteners.com\/ja\/contact\/\" style=\"background-color:#b59d53\" target=\"_blank\" rel=\"noreferrer noopener\">\u7121\u6599\u898b\u7a4d\u3082\u308a<\/a><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>\u30af\u30a4\u30c3\u30af\u30a2\u30f3\u30b5\u30fc\uff1a\u30dc\u30eb\u30c8\u4e88\u5727\u306f\u3001\u7de0\u3081\u4ed8\u3051\u4e2d\u306b\u30d5\u30a1\u30b9\u30ca\u30fc\u306b\u8a98\u767a\u3055\u308c\u308b\u5f35\u529b\u3067\u3059\u3002\u63a5\u5408\u3055\u308c\u305f\u90e8\u54c1\u3092\u5727\u7e2e\u3057\u3001\u632f\u52d5\u3084\u5370\u52a0\u8377\u91cd\u306b\u3088\u308b\u305d\u308c\u3089\u306e\u5206\u96e2\u3092\u9632\u304e\u307e\u3059\u3002\u4e88\u5727\u304c\u4f4e\u4e0b\u3059\u308b\u3068\u3001\u30b8\u30e7\u30a4\u30f3\u30c8\u306f\u5404\u8377\u91cd\u30b5\u30a4\u30af\u30eb\u4e2d\u306b\u52d5\u304d\u59cb\u3081\u3001\u958b\u304d\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u30b5\u30a4\u30af\u30eb\u8377\u91cd\u306f\u30dc\u30eb\u30c8\u306b\u3055\u3089\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u3001\u5fdc\u529b\u30ec\u30d9\u30eb\u3092\u5897\u52a0\u3055\u305b\u3001\u75b2\u52b4\u7834\u58ca\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002\u30dc\u30eb\u30c8\u4e88\u5727\u8a08\u7b97\u306f\u3001\u7279\u5b9a\u306e\u30c8\u30eb\u30af\u304c\u5370\u52a0\u3055\u308c\u305f\u3068\u304d\u306b\u751f\u6210\u3055\u308c\u308b\u30af\u30e9\u30f3\u30d7\u529b\u3092\u6c7a\u5b9a\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u30d7\u30ed\u30bb\u30b9\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u3001\u5927\u5e45\u306a\u5909\u52d5\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u306e\u3042\u308b\u591a\u304f\u306e\u8981\u56e0\u304c\u3042\u308a\u307e\u3059\u3002CNRL\u306f\u3001\u30a8\u30f3\u30b8\u30f3\u3001\u30b7\u30e3\u30fc\u30b7\u3001 [\u2026] \u7528\u306e\u81ea\u52d5\u8eca\u7528\u30d5\u30a1\u30b9\u30ca\u30fc\u3092\u88fd\u9020\u3057\u3066\u3044\u307e\u3059\u3002<\/p>","protected":false},"author":1,"featured_media":3926,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[186],"tags":[],"class_list":["post-3921","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bolt"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Bolt Preload Calculation: Formula, Clamping Force &amp; Fatigue | CNRL<\/title>\n<meta name=\"description\" content=\"Learn the bolt preload calculation formula and key factors like friction and torque. Explore how precise clamp force improves automotive joint reliability.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.rlfasteners.com\/ja\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bolt Preload Calculation: Formula, Clamping Force &amp; Fatigue | CNRL\" \/>\n<meta property=\"og:description\" content=\"Learn the bolt preload calculation formula and key factors like friction and torque. Explore how precise clamp force improves automotive joint reliability.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.rlfasteners.com\/ja\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/\" \/>\n<meta property=\"og:site_name\" content=\"Fastener Manufacturer\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/CNRLfasteners\" \/>\n<meta property=\"article:published_time\" content=\"2026-08-03T07:38:49+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-02T07:57:28+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.rlfasteners.com\/wp-content\/uploads\/2026\/09\/23224.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"450\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"5\u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\/\/www.rlfasteners.com\/#\/schema\/person\/246e471ae246e0f35793a4f0b10b61bf\"},\"headline\":\"Bolt Preload Calculation: Why Does Bolt Preload Loss Cause Joint Fatigue in High-Vibration Automotive Applications?\",\"datePublished\":\"2026-08-03T07:38:49+00:00\",\"dateModified\":\"2026-09-02T07:57:28+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/\"},\"wordCount\":972,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.rlfasteners.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.rlfasteners.com\/wp-content\/uploads\/2026\/09\/23224.webp\",\"articleSection\":[\"Bolt\"],\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/\",\"url\":\"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/\",\"name\":\"Bolt Preload Calculation: Formula, Clamping Force & Fatigue | CNRL\",\"isPartOf\":{\"@id\":\"https:\/\/www.rlfasteners.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.rlfasteners.com\/wp-content\/uploads\/2026\/09\/23224.webp\",\"datePublished\":\"2026-08-03T07:38:49+00:00\",\"dateModified\":\"2026-09-02T07:57:28+00:00\",\"description\":\"Learn the bolt preload calculation formula and key factors like friction and torque. Explore how precise clamp force improves automotive joint reliability.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#breadcrumb\"},\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#primaryimage\",\"url\":\"https:\/\/www.rlfasteners.com\/wp-content\/uploads\/2026\/09\/23224.webp\",\"contentUrl\":\"https:\/\/www.rlfasteners.com\/wp-content\/uploads\/2026\/09\/23224.webp\",\"width\":800,\"height\":450,\"caption\":\"feature image of stainless steel bolts\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.rlfasteners.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Bolt Preload Calculation: Why Does Bolt Preload Loss Cause Joint Fatigue in High-Vibration Automotive Applications?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.rlfasteners.com\/#website\",\"url\":\"https:\/\/www.rlfasteners.com\/\",\"name\":\"Automotive Fastener Manufacturers\u200b - CNRL\",\"description\":\"CNRL specializes in custom fasteners that combine superior quality with cost-effectiveness, optimizing project budgets.\",\"publisher\":{\"@id\":\"https:\/\/www.rlfasteners.com\/#organization\"},\"alternateName\":\"CNRL\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.rlfasteners.com\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"ja\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.rlfasteners.com\/#organization\",\"name\":\"CNRL\",\"alternateName\":\"Zhejiang Ruili \uff08CNRL\uff09Auto Parts Co., Ltd.\",\"url\":\"https:\/\/www.rlfasteners.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\/\/www.rlfasteners.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.rlfasteners.com\/wp-content\/uploads\/2024\/11\/CNRL-Logo2.png\",\"contentUrl\":\"https:\/\/www.rlfasteners.com\/wp-content\/uploads\/2024\/11\/CNRL-Logo2.png\",\"width\":696,\"height\":696,\"caption\":\"CNRL\"},\"image\":{\"@id\":\"https:\/\/www.rlfasteners.com\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/CNRLfasteners\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.rlfasteners.com\/#\/schema\/person\/246e471ae246e0f35793a4f0b10b61bf\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\/\/www.rlfasteners.com\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/a5897a878f3bac4cb5dceceea12ed045a5e21138d217ad59263f373f4e992038?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/a5897a878f3bac4cb5dceceea12ed045a5e21138d217ad59263f373f4e992038?s=96&d=mm&r=g\",\"caption\":\"admin\"},\"sameAs\":[\"https:\/\/www.rlfasteners.com\"],\"url\":\"https:\/\/www.rlfasteners.com\/ja\/author\/admin\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Bolt Preload Calculation: Formula, Clamping Force & Fatigue | CNRL","description":"Learn the bolt preload calculation formula and key factors like friction and torque. Explore how precise clamp force improves automotive joint reliability.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.rlfasteners.com\/ja\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/","og_locale":"ja_JP","og_type":"article","og_title":"Bolt Preload Calculation: Formula, Clamping Force & Fatigue | CNRL","og_description":"Learn the bolt preload calculation formula and key factors like friction and torque. Explore how precise clamp force improves automotive joint reliability.","og_url":"https:\/\/www.rlfasteners.com\/ja\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/","og_site_name":"Fastener Manufacturer","article_publisher":"https:\/\/www.facebook.com\/CNRLfasteners","article_published_time":"2026-08-03T07:38:49+00:00","article_modified_time":"2026-09-02T07:57:28+00:00","og_image":[{"width":800,"height":450,"url":"https:\/\/www.rlfasteners.com\/wp-content\/uploads\/2026\/09\/23224.webp","type":"image\/webp"}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u57f7\u7b46\u8005":"admin","\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593":"5\u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#article","isPartOf":{"@id":"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/"},"author":{"name":"admin","@id":"https:\/\/www.rlfasteners.com\/#\/schema\/person\/246e471ae246e0f35793a4f0b10b61bf"},"headline":"Bolt Preload Calculation: Why Does Bolt Preload Loss Cause Joint Fatigue in High-Vibration Automotive Applications?","datePublished":"2026-08-03T07:38:49+00:00","dateModified":"2026-09-02T07:57:28+00:00","mainEntityOfPage":{"@id":"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/"},"wordCount":972,"commentCount":0,"publisher":{"@id":"https:\/\/www.rlfasteners.com\/#organization"},"image":{"@id":"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#primaryimage"},"thumbnailUrl":"https:\/\/www.rlfasteners.com\/wp-content\/uploads\/2026\/09\/23224.webp","articleSection":["Bolt"],"inLanguage":"ja","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/","url":"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/","name":"Bolt Preload Calculation: Formula, Clamping Force & Fatigue | CNRL","isPartOf":{"@id":"https:\/\/www.rlfasteners.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#primaryimage"},"image":{"@id":"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#primaryimage"},"thumbnailUrl":"https:\/\/www.rlfasteners.com\/wp-content\/uploads\/2026\/09\/23224.webp","datePublished":"2026-08-03T07:38:49+00:00","dateModified":"2026-09-02T07:57:28+00:00","description":"Learn the bolt preload calculation formula and key factors like friction and torque. Explore how precise clamp force improves automotive joint reliability.","breadcrumb":{"@id":"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#breadcrumb"},"inLanguage":"ja","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/"]}]},{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#primaryimage","url":"https:\/\/www.rlfasteners.com\/wp-content\/uploads\/2026\/09\/23224.webp","contentUrl":"https:\/\/www.rlfasteners.com\/wp-content\/uploads\/2026\/09\/23224.webp","width":800,"height":450,"caption":"feature image of stainless steel bolts"},{"@type":"BreadcrumbList","@id":"https:\/\/www.rlfasteners.com\/blog\/automotive-fastener\/bolt\/bolt-preload-calculation-guide\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.rlfasteners.com\/"},{"@type":"ListItem","position":2,"name":"Bolt Preload Calculation: Why Does Bolt Preload Loss Cause Joint Fatigue in High-Vibration Automotive Applications?"}]},{"@type":"WebSite","@id":"https:\/\/www.rlfasteners.com\/#website","url":"https:\/\/www.rlfasteners.com\/","name":"Automotive Fastener Manufacturers\u200b - CNRL","description":"CNRL specializes in custom fasteners that combine superior quality with cost-effectiveness, optimizing project budgets.","publisher":{"@id":"https:\/\/www.rlfasteners.com\/#organization"},"alternateName":"CNRL","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.rlfasteners.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"ja"},{"@type":"Organization","@id":"https:\/\/www.rlfasteners.com\/#organization","name":"CNRL","alternateName":"Zhejiang Ruili \uff08CNRL\uff09Auto Parts Co., Ltd.","url":"https:\/\/www.rlfasteners.com\/","logo":{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/www.rlfasteners.com\/#\/schema\/logo\/image\/","url":"https:\/\/www.rlfasteners.com\/wp-content\/uploads\/2024\/11\/CNRL-Logo2.png","contentUrl":"https:\/\/www.rlfasteners.com\/wp-content\/uploads\/2024\/11\/CNRL-Logo2.png","width":696,"height":696,"caption":"CNRL"},"image":{"@id":"https:\/\/www.rlfasteners.com\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/CNRLfasteners"]},{"@type":"Person","@id":"https:\/\/www.rlfasteners.com\/#\/schema\/person\/246e471ae246e0f35793a4f0b10b61bf","name":"admin","image":{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/www.rlfasteners.com\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/a5897a878f3bac4cb5dceceea12ed045a5e21138d217ad59263f373f4e992038?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/a5897a878f3bac4cb5dceceea12ed045a5e21138d217ad59263f373f4e992038?s=96&d=mm&r=g","caption":"admin"},"sameAs":["https:\/\/www.rlfasteners.com"],"url":"https:\/\/www.rlfasteners.com\/ja\/author\/admin\/"}]}},"_links":{"self":[{"href":"https:\/\/www.rlfasteners.com\/ja\/wp-json\/wp\/v2\/posts\/3921","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.rlfasteners.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.rlfasteners.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.rlfasteners.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.rlfasteners.com\/ja\/wp-json\/wp\/v2\/comments?post=3921"}],"version-history":[{"count":0,"href":"https:\/\/www.rlfasteners.com\/ja\/wp-json\/wp\/v2\/posts\/3921\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.rlfasteners.com\/ja\/wp-json\/wp\/v2\/media\/3926"}],"wp:attachment":[{"href":"https:\/\/www.rlfasteners.com\/ja\/wp-json\/wp\/v2\/media?parent=3921"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.rlfasteners.com\/ja\/wp-json\/wp\/v2\/categories?post=3921"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.rlfasteners.com\/ja\/wp-json\/wp\/v2\/tags?post=3921"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}