{"id":5867,"date":"2026-09-04T12:59:31","date_gmt":"2026-09-04T04:59:31","guid":{"rendered":"https:\/\/www.sj-gauge.com\/?p=5867"},"modified":"2026-09-04T14:13:56","modified_gmt":"2026-09-04T06:13:56","slug":"pressure-gauge-thread-will-not-fit","status":"publish","type":"post","link":"https:\/\/www.sj-gauge.com\/ja\/pressure-gauge-thread-will-not-fit\/","title":{"rendered":"\u540c\u30581\/4\u30a4\u30f3\u30c1\u30cd\u30b8\u306a\u306e\u306b\u3001\u306a\u305c\u5727\u529b\u8a08\u304c\u5408\u308f\u306a\u3044\u306e\u304b\uff1f"},"content":{"rendered":"<p>\u5727\u529b\u8a08\u3068\u914d\u7ba1\u7d99\u624b\u306e\u4e21\u65b9\u306b\u300c1\/4\u30a4\u30f3\u30c1\u300d\u3068\u8868\u793a\u3055\u308c\u3066\u3044\u3066\u3082\u3001\u5fc5\u305a\u3057\u3082\u4e00\u7dd2\u306b\u53d6\u308a\u4ed8\u3051\u3089\u308c\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u8868\u793a\u306f\u516c\u79f0\u30b5\u30a4\u30ba\u3092\u793a\u3059\u3060\u3051\u3067\u3042\u308a\u3001NPT\u3001G\/BSPP\u3001PT\/R\u306a\u3069\u306e\u306d\u3058\u898f\u683c\u3082\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>\n\n\n\n<p>\u63a5\u7d9a\u90e8\u304c1\u30012\u56de\u8ee2\u3057\u304b\u304b\u307f\u5408\u308f\u306a\u3044\u5834\u5408\u3001\u307e\u3059\u307e\u3059\u66f2\u304c\u3063\u3066\u3044\u304f\u5834\u5408\u3001\u307e\u305f\u306f\u7570\u5e38\u306b\u5927\u304d\u306a\u529b\u304c\u5fc5\u8981\u306a\u5834\u5408\u306f\u3001\u6c38\u4e45\u7684\u306a\u306d\u3058\u5c71\u306e\u640d\u50b7\u3092\u9632\u3050\u305f\u3081\u306b\u3001immediatety \u3092\u4e2d\u6b62\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\" style=\"width:640px\"><img fetchpriority=\"high\" decoding=\"async\" width=\"993\" height=\"993\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/sj-pressure-gauge-quarter-inch-npt-thread-square.jpg\" alt=\"SJ pressure gauge with a 1\/4-inch NPT male process connection\" class=\"wp-image-5870\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/sj-pressure-gauge-quarter-inch-npt-thread-square.jpg 993w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/sj-pressure-gauge-quarter-inch-npt-thread-square-300x300.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/sj-pressure-gauge-quarter-inch-npt-thread-square-150x150.jpg 150w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/sj-pressure-gauge-quarter-inch-npt-thread-square-768x768.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/sj-pressure-gauge-quarter-inch-npt-thread-square-12x12.jpg 12w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/sj-pressure-gauge-quarter-inch-npt-thread-square-600x600.jpg 600w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/sj-pressure-gauge-quarter-inch-npt-thread-square-100x100.jpg 100w\" sizes=\"(max-width: 993px) 100vw, 993px\" \/><figcaption class=\"wp-element-caption\">SJ\u5727\u529b\u8a08\u306e1\/4\u30a4\u30f3\u30c1NPT\u30aa\u30b9\u578b\u30d7\u30ed\u30bb\u30b9\u63a5\u7d9a\u90e8\u3002.<\/figcaption><\/figure>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_87 counter-hierarchy ez-toc-counter ez-toc-custom 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\u306e\u8868\u793a\/\u975e\u8868\u793a\"><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: #7b1e1c;color:#7b1e1c\" 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: #7b1e1c;color:#7b1e1c\" 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' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.sj-gauge.com\/ja\/pressure-gauge-thread-will-not-fit\/#why-wont-threads-of-the-same-size-fit\" >\u540c\u3058\u30b5\u30a4\u30ba\u306e\u30cd\u30b8\u5c71\u304c\u5408\u308f\u306a\u3044\u306e\u306f\u306a\u305c\u3067\u3059\u304b\uff1f<\/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.sj-gauge.com\/ja\/pressure-gauge-thread-will-not-fit\/#what-happens-if-you-force-the-connection\" >\u5f37\u5236\u7684\u306b\u63a5\u7d9a\u3059\u308b\u3068\u3069\u3046\u306a\u308a\u307e\u3059\u304b\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.sj-gauge.com\/ja\/pressure-gauge-thread-will-not-fit\/#how-to-identify-the-correct-thread\" >\u6b63\u3057\u3044\u7cf8\u306e\u898b\u5206\u3051\u65b9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.sj-gauge.com\/ja\/pressure-gauge-thread-will-not-fit\/#international-standards-reference\" >\u56fd\u969b\u898f\u683c\u306e\u53c2\u8003\u60c5\u5831<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.sj-gauge.com\/ja\/pressure-gauge-thread-will-not-fit\/#frequently-asked-questions\" >\u3088\u304f\u3042\u308b\u8cea\u554f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.sj-gauge.com\/ja\/pressure-gauge-thread-will-not-fit\/#conclusion\" >\u307e\u3068\u3081<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\" id=\"h-why-won-t-threads-of-the-same-size-fit\"><span class=\"ez-toc-section\" id=\"why-wont-threads-of-the-same-size-fit\"><\/span>\u540c\u3058\u30b5\u30a4\u30ba\u306e\u30cd\u30b8\u5c71\u304c\u5408\u308f\u306a\u3044\u306e\u306f\u306a\u305c\u3067\u3059\u304b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Co1TP8\u30c8\u30f3\u306e\u7406\u7531\u306b\u306f\u4ee5\u4e0b\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7247\u5074\u306b\u306f\u30c6\u30fc\u30d1\u30fc\u306d\u3058\u304c\u3001\u3082\u3046\u7247\u5074\u306b\u306f\u5e73\u884c\u306d\u3058\u304c\u5207\u3089\u308c\u3066\u3044\u308b\u3002<\/li>\n\n\n\n<li>\u306d\u3058\u30d4\u30c3\u30c1\u307e\u305f\u306f\u306d\u3058\u5f62\u72b6\u304c\u7570\u306a\u308b<\/li>\n\n\n\n<li>\u96c4\u306d\u3058\u3068\u96cc\u306d\u3058\u306e\u516c\u5dee\u306f\u4e92\u63db\u6027\u304c\u3042\u308a\u307e\u305b\u3093<\/li>\n\n\n\n<li>\u53d6\u308a\u4ed8\u3051\u53e3\u306b\u3078\u3053\u307f\u3084\u30d0\u30ea\u304c\u3042\u308b<\/li>\n\n\n\n<li>\u53d6\u308a\u4ed8\u3051\u6642\u306b\u63a5\u7d9a\u90e8\u306e\u4f4d\u7f6e\u304c\u305a\u308c\u3066\u3044\u305f\u305f\u3081\u3001\u306d\u3058\u5c71\u304c\u640d\u50b7\u3057\u305f\u3002<\/li>\n\n\n\n<li>\u65e2\u5b58\u306e\u306d\u3058\u5c71\u5185\u90e8\u306b\u53e4\u3044\u30b7\u30fc\u30e9\u30f3\u30c8\u3084\u8150\u98df\u304c\u6b8b\u3063\u3066\u3044\u308b<\/li>\n<\/ul>\n\n\n\n<p>\u30d1\u30a4\u30d7\u306d\u3058\u306e\u516c\u79f0\u30b5\u30a4\u30ba\u306f\u3001\u76f4\u63a5\u6e2c\u5b9a\u3057\u305f\u5916\u5f84\u3068\u306f\u7570\u306a\u308b\u305f\u3081\u3001\u5358\u7d14\u306b\u5916\u5f84\u3092\u6e2c\u5b9a\u3057\u3066\u300c1\/4\u30a4\u30f3\u30c1\u300d\u3068\u6bd4\u8f03\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u201c<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\" style=\"width:640px\"><img decoding=\"async\" width=\"1440\" height=\"1080\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/quarter-inch-npt-thread-adapter-side.jpg\" alt=\"Close-up side view of a 1\/4-inch NPT male thread adapter\" class=\"wp-image-5864\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/quarter-inch-npt-thread-adapter-side.jpg 1440w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/quarter-inch-npt-thread-adapter-side-300x225.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/quarter-inch-npt-thread-adapter-side-1024x768.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/quarter-inch-npt-thread-adapter-side-768x576.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/quarter-inch-npt-thread-adapter-side-16x12.jpg 16w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/quarter-inch-npt-thread-adapter-side-600x450.jpg 600w\" sizes=\"(max-width: 1440px) 100vw, 1440px\" \/><figcaption class=\"wp-element-caption\">\u306d\u3058\u5c71\u306e\u5f62\u72b6\u3068\u30d4\u30c3\u30c1\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306e\u30011\/4\u30a4\u30f3\u30c1NPT\u30aa\u30b9\u306d\u3058\u30a2\u30c0\u30d7\u30bf\u306e\u5074\u9762\u56f3\u3002.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-what-happens-if-you-force-the-connection\"><span class=\"ez-toc-section\" id=\"what-happens-if-you-force-the-connection\"><\/span>\u5f37\u5236\u7684\u306b\u63a5\u7d9a\u3059\u308b\u3068\u3069\u3046\u306a\u308a\u307e\u3059\u304b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u4e92\u63db\u6027\u306e\u306a\u3044\u30b9\u30ec\u30c3\u30c9\u898f\u683c\u3092\u7121\u7406\u3084\u308a\u7d44\u307f\u5408\u308f\u305b\u308b\u3068\u3001\u6b21\u306e\u3088\u3046\u306a\u554f\u984c\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u306d\u3058\u5c71\u306e\u5909\u5f62\u307e\u305f\u306f\u7834\u640d\u3002.<\/li>\n\n\n\n<li>\u30b9\u30c6\u30f3\u30ec\u30b9\u92fc\u306d\u3058\u306e\u713c\u304d\u4ed8\u304d\u307e\u305f\u306f\u56fa\u7740\u3002.<\/li>\n\n\n\n<li>\u53d6\u308a\u5916\u305b\u306a\u3044\u7e4b\u304c\u308a\u3002.<\/li>\n\n\n\n<li>\u52a0\u5727\u5f8c\u306e\u30ac\u30b9\u307e\u305f\u306f\u6db2\u4f53\u306e\u6f0f\u6d29\u3002.<\/li>\n\n\n\n<li>\u5727\u529b\u8a08\u306e\u63a5\u7d9a\u90e8\u306b\u7570\u5e38\u306a\u30c8\u30eb\u30af\u304c\u52a0\u308f\u308a\u307e\u3057\u305f\u3002.<\/li>\n<\/ol>\n\n\n\n<p>immediate\u306e\u6f0f\u6d29\u304c\u306a\u3044\u304b\u3089\u3068\u3044\u3063\u3066\u3001\u305d\u306e\u63a5\u7d9a\u304c\u9577\u671f\u4f7f\u7528\u306b\u5b89\u5168\u3067\u3042\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-how-to-identify-the-correct-thread\"><span class=\"ez-toc-section\" id=\"how-to-identify-the-correct-thread\"><\/span>\u6b63\u3057\u3044\u7cf8\u306e\u898b\u5206\u3051\u65b9<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u307e\u305a\u3001\u53e4\u3044\u5727\u529b\u8a08\u3001\u6a5f\u5668\u306e\u56f3\u9762\u3001\u307e\u305f\u306f\u7d99\u624b\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u4ed5\u69d8\u8868\u793a\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u8868\u793a\u304c\u306a\u3044\u5834\u5408\u306f\u3001\u5916\u5f84\u3001\u30d4\u30c3\u30c1\u3001\u30c6\u30fc\u30d1\u30fc\u3092\u6e2c\u5b9a\u3057\u3001\u306d\u3058\u30b2\u30fc\u30b8\u3067\u7d50\u679c\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<p>\u6a5f\u5668\u3092\u505c\u6b62\u3067\u304d\u306a\u3044\u5834\u5408\u306f\u3001\u307e\u305a\u8cfc\u5165\u8a18\u9332\u3001\u65e7\u88fd\u54c1\u30e2\u30c7\u30eb\u3001\u304a\u3088\u3073\u5143\u306e\u914d\u7ba1\u56f3\u9762\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30b7\u30b9\u30c6\u30e0\u306b\u5727\u529b\u304c\u304b\u304b\u3063\u3066\u3044\u308b\u9593\u306f\u3001\u6e2c\u5b9a\u306e\u305f\u3081\u306b\u63a5\u7d9a\u90e8\u3092\u7d76\u5bfe\u306b\u5916\u3055\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large is-resized\" style=\"width:640px\"><img decoding=\"async\" width=\"1440\" height=\"1080\" src=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/quarter-inch-npt-thread-adapter-front.jpg\" alt=\"Front-angle view of a 1\/4-inch NPT male thread adapter\" class=\"wp-image-5865\" srcset=\"https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/quarter-inch-npt-thread-adapter-front.jpg 1440w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/quarter-inch-npt-thread-adapter-front-300x225.jpg 300w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/quarter-inch-npt-thread-adapter-front-1024x768.jpg 1024w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/quarter-inch-npt-thread-adapter-front-768x576.jpg 768w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/quarter-inch-npt-thread-adapter-front-16x12.jpg 16w, https:\/\/www.sj-gauge.com\/wp-content\/uploads\/2026\/09\/quarter-inch-npt-thread-adapter-front-600x450.jpg 600w\" sizes=\"(max-width: 1440px) 100vw, 1440px\" \/><figcaption class=\"wp-element-caption\">1\/4\u30a4\u30f3\u30c1NPT\u30a2\u30c0\u30d7\u30bf\u30fc\u306e\u6b63\u9762\u56f3\u3002\u306d\u3058\u5c71\u7aef\u90e8\u3068\u5916\u5f62\u3092\u793a\u3057\u3066\u3044\u308b\u3002.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-international-standards-reference\"><span class=\"ez-toc-section\" id=\"international-standards-reference\"><\/span>\u56fd\u969b\u898f\u683c\u306e\u53c2\u8003\u60c5\u5831<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u3053\u306e\u30c8\u30d4\u30c3\u30af\u306b\u95a2\u9023\u3059\u308b\u9078\u5b9a\u3001\u8a2d\u7f6e\u3001\u307e\u305f\u306f\u691c\u8a3c\u306e\u969b\u306e\u53c2\u8003\u3068\u3057\u3066\u3001\u4ee5\u4e0b\u306e\u898f\u683c\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.asme.org\/codes-standards\/find-codes-standards\/b1201-pipe-threads-general-purpose-inch\"><strong>ASME B1.20.1-2013 (R2018):<\/strong> NPT\u306d\u3058\u306e\u516c\u79f0\u30b5\u30a4\u30ba\u3001\u5916\u5f84\u3001\u30d4\u30c3\u30c1\u3001\u30c6\u30fc\u30d1\u30fc\u306f\u898f\u683c\u3068\u7167\u5408\u3057\u3066\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u300c1\/4\u30a4\u30f3\u30c1\u300d\u3068\u3044\u3046\u8868\u8a18\u3060\u3051\u3067\u306f\u4e0d\u5341\u5206\u3067\u3059\u3002.<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.iso.org\/standard\/20819.html\"><strong>ISO 7-1:1994 + Cor.1:2007:<\/strong> R\u30b7\u30ea\u30fc\u30ba\u306e\u30c6\u30fc\u30d1\u30fc\u7ba1\u306d\u3058\u306f\u3001\u547c\u3073\u5f84\u304c\u540c\u3058\u5834\u5408\u3067\u3082\u3001NPT\u3068\u540c\u3058\u306d\u3058\u5f62\u72b6\u3068\u3057\u3066\u6271\u3046\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002.<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.iso.org\/standard\/33777.html\"><strong>ISO 228-1:2000:<\/strong> G\u5e73\u884c\u306d\u3058\u306e\u5834\u5408\u3001\u306d\u3058\u306e\u5bf8\u6cd5\u3068\u5916\u90e8\u30b7\u30fc\u30eb\u9762\u306e\u691c\u8a3c\u304c\u5fc5\u8981\u3067\u3059\u3002\u306d\u3058\u304c\u4e92\u3044\u306b\u306d\u3058\u8fbc\u3081\u308b\u304b\u3069\u3046\u304b\u3060\u3051\u3067\u4e92\u63db\u6027\u3092\u5224\u65ad\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002.<\/a><\/li>\n<\/ul>\n\n\n\n<p>\u898f\u683c\u306b\u95a2\u3059\u308b\u6ce8\u8a18\uff1a\u6a5f\u5668\u306e\u8a2d\u7f6e\u5834\u6240\u3001\u30d7\u30ed\u30bb\u30b9\u30ea\u30b9\u30af\u3001\u304a\u3088\u3073\u8cfc\u5165\u4ed5\u69d8\u306b\u5fdc\u3058\u3066\u3001\u9069\u7528\u7bc4\u56f2\u3001\u7248\u3001\u304a\u3088\u3073\u8a8d\u8a3c\u6587\u66f8\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u898f\u683c\u3092\u53c2\u7167\u3057\u305f\u304b\u3089\u3068\u3044\u3063\u3066\u3001\u88fd\u54c1\u304c\u81ea\u52d5\u7684\u306b\u8a8d\u8a3c\u3055\u308c\u308b\u308f\u3051\u3067\u306f\u306a\u304f\u3001\u307e\u305f\u3001\u63a5\u7d9a\u30bf\u30a4\u30d7\u306e\u88fd\u9020\u5143\u306b\u3088\u308b\u78ba\u8a8d\u306b\u4ee3\u308f\u308b\u3082\u306e\u3067\u3082\u3042\u308a\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-frequently-asked-questions\"><span class=\"ez-toc-section\" id=\"frequently-asked-questions\"><\/span>\u3088\u304f\u3042\u308b\u8cea\u554f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-can-more-thread-sealing-tape-fix-an-incompatible-thread\">\u306d\u3058\u5c71\u30b7\u30fc\u30eb\u30c6\u30fc\u30d7\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u3067\u3001\u4e92\u63db\u6027\u306e\u306a\u3044\u306d\u3058\u5c71\u3092\u4fee\u5fa9\u3067\u304d\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p>\u3044\u3044\u3048\u3002\u306d\u3058\u30b7\u30fc\u30eb\u30c6\u30fc\u30d7\u306f\u3001\u4e92\u63db\u6027\u306e\u3042\u308b\u306d\u3058\u5c71\u3092\u30b7\u30fc\u30eb\u3059\u308b\u306e\u306b\u5f79\u7acb\u3064\u3060\u3051\u3067\u3001\u30d4\u30c3\u30c1\u3001\u306d\u3058\u5c71\u306e\u5f62\u72b6\u3001\u30c6\u30fc\u30d1\u30fc\u306e\u9055\u3044\u3092\u4fee\u6b63\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-can-a-fitting-still-be-used-after-it-has-been-forced-together\">\u7121\u7406\u3084\u308a\u62bc\u3057\u8fbc\u3093\u3060\u7d99\u624b\u306f\u3001\u305d\u306e\u5f8c\u3082\u4f7f\u7528\u3067\u304d\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p>\u307e\u305a\u3001\u306d\u3058\u5c71\u306b\u5909\u5f62\u3001\u50b7\u3001\u713c\u304d\u4ed8\u304d\u304c\u306a\u3044\u304b\u70b9\u691c\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u640d\u50b7\u3057\u305f\u7d99\u624b\u306f\u3001\u91cd\u8981\u306a\u5727\u529b\u6a5f\u5668\u306b\u76f4\u63a5\u518d\u5229\u7528\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conclusion\"><span class=\"ez-toc-section\" id=\"conclusion\"><\/span>\u307e\u3068\u3081<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u540c\u30581\/4\u30a4\u30f3\u30c1\u306e\u547c\u3073\u5f84\u306e\u306d\u3058\u3067\u3082\u3001\u898f\u683c\u304c\u7570\u306a\u308b\u305f\u3081\u53d6\u308a\u4ed8\u3051\u304c\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u7570\u5e38\u306a\u62b5\u6297\u3092\u611f\u3058\u305f\u5834\u5408\u306f\u3001\u7121\u7406\u306b\u63a5\u7d9a\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002\u307e\u305a\u3001\u306d\u3058\u306e\u898f\u683c\u3001\u30d4\u30c3\u30c1\u3001\u30c6\u30fc\u30d1\u30fc\u3001\u304a\u3088\u3073\u30b7\u30fc\u30eb\u65b9\u6cd5\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>\n\n\n\n<p><strong><a href=\"https:\/\/www.sj-gauge.com\/ja\/contact\/\">\u6a5f\u5668\u306e\u306d\u3058\u898f\u683c\u304c\u78ba\u8a8d\u3067\u304d\u306a\u3044\u5834\u5408\u306f\u3001\u65e7\u88fd\u54c1\u306e\u578b\u756a\u3001\u306d\u3058\u90e8\u306e\u63a5\u5199\u5199\u771f\u3001\u5bf8\u6cd5\u3092SJ Gauge\u307e\u3067\u304a\u9001\u308a\u304f\u3060\u3055\u3044\u3002\u9069\u5207\u306a\u30d7\u30ed\u30bb\u30b9\u63a5\u7d9a\u3092\u7279\u5b9a\u3059\u308b\u304a\u624b\u4f1d\u3044\u3092\u3044\u305f\u3057\u307e\u3059\u3002.<\/a><\/strong><\/p>\n\n\n\n<p><em><a href=\"https:\/\/www.sj-gauge.com\/ja\/pressure-gauge-npt-pt-g-thread\/\">\u3055\u3089\u306b\u8a73\u3057\u304f\u77e5\u308a\u305f\u3044\u5834\u5408\u306f\u3001\u5727\u529b\u8a08\u306eNPT\u3001PT\u3001G\u30cd\u30b8\u306e\u9055\u3044\u3068\u30b7\u30fc\u30eb\u65b9\u6cd5\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/a><\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>A pressure gauge and a pipe fitting may both be marked \u201c1\/4 inch,\u201d but that does not mean they can be installed together. The designation identifies only the nominal size; you must also confirm the thread standard, such as NPT, G\/BSPP, or PT\/R. If the connection engages for only one or two turns, becomes increasingly crooked, or requires unusually high force, stop immediately to avoid permanent thread damage. Why Won\u2019t Threads of the Same Size Fit? Common reasons include: A pipe thread\u2019s nominal size is also not the same as its directly measured outside diameter, so you cannot simply measure the outside diameter and compare it with \u201c1\/4 inch.\u201d What [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":5866,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[61],"tags":[71],"class_list":["post-5867","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge","tag-pressure"],"blocksy_meta":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.7 (Yoast SEO v28.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Why Won&#039;t a 1\/4-Inch Pressure Gauge Thread\u3002\u306b\u3064\u3044\u3066\uff5cSJ Gauge<\/title>\n<meta name=\"description\" content=\"Both parts are marked 1\/4 inch but engage for only one or two turns? 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