{"product_id":"unc-helicoil-ring-thread-gauge-go-nogo-st-2-56-1-4-28","title":"UNC \/ UNF Helicoil STI Thread Plug Gauge GO \/ NO-GO (#1–3\/4\")","description":"\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eUNC \/ UNF Helicoil STI Thread Plug Gauge GO \/ NO-GO (#1–3\/4\")\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eUNC \/ UNF Helicoil STI Thread Plug Gauge GO \/ NO-GO\u003c\/strong\u003e is designed for accurate inspection of \u003cstrong\u003einternal STI threads for Helicoil and wire thread insert applications\u003c\/strong\u003e. It is used to verify the tapped thread \u003cstrong\u003ebefore installation of the thread insert\u003c\/strong\u003e, ensuring that the STI thread meets the required dimensional limits.\u003c\/p\u003e\n\u003cp\u003eEach gauge features separate \u003cstrong\u003eGO and NO-GO\u003c\/strong\u003e checking ends, providing a fast and reliable inspection method for production, machining, and quality control applications.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eGO \/ NO-GO STI thread plug gauge\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eFor checking internal threads designed for \u003cstrong\u003eHelicoil \/ wire thread inserts\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eUNC and UNF STI threads\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eFor inspection \u003cstrong\u003ebefore installation of the thread insert\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAvailable in \u003cstrong\u003e2B and 3B tolerance classes\u003c\/strong\u003e, depending on size\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRight-hand thread\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eSize range: \u003cstrong\u003e#1-64 to 3\/4\"-16\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eQuick and reliable thread inspection\u003c\/li\u003e\n\u003cli\u003eSuitable for production and quality control applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eCertification\u003c\/h3\u003e\n\u003cp\u003eMost gauges are supplied with a \u003cstrong\u003emanufacturer’s inspection certificate\u003c\/strong\u003e. An \u003cstrong\u003eaccredited laboratory calibration certificate\u003c\/strong\u003e is available upon request at an additional cost.\u003c\/p\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInspection of tapped holes for \u003cstrong\u003eHelicoil \/ wire thread inserts\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eVerification of \u003cstrong\u003eUNC \/ UNF STI threads\u003c\/strong\u003e prior to insert installation\u003c\/li\u003e\n\u003cli\u003eCNC machining quality control\u003c\/li\u003e\n\u003cli\u003eProduction line inspection\u003c\/li\u003e\n\u003cli\u003eIncoming and final inspection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"139","offers":[{"title":"Helicoil 2-56 UNC 2B","offer_id":50448313057528,"sku":"Q61601","price":73.33,"currency_code":"USD","in_stock":true},{"title":"Helicoil 3-48 UNC 2B","offer_id":50448313090296,"sku":"Q61611","price":63.33,"currency_code":"USD","in_stock":true},{"title":"Helicoil 4-40 UNC 2B","offer_id":50448313123064,"sku":"Q61602","price":51.67,"currency_code":"USD","in_stock":true},{"title":"Helicoil 5-40 UNC 2B","offer_id":50448313155832,"sku":"Q61612","price":63.33,"currency_code":"USD","in_stock":true},{"title":"Helicoil 6-32 UNC 2B","offer_id":50448313188600,"sku":"Q61603","price":51.67,"currency_code":"USD","in_stock":true},{"title":"Helicoil 6-40 UNF 2B","offer_id":50448313221368,"sku":"Q61623","price":96.67,"currency_code":"USD","in_stock":true},{"title":"Helicoil 8-32 UNC 2B","offer_id":50448313286904,"sku":"Q61604","price":51.67,"currency_code":"USD","in_stock":true},{"title":"Helicoil 8-36 UNF 2B","offer_id":50448313319672,"sku":"Q61620","price":61.67,"currency_code":"USD","in_stock":true},{"title":"Helicoil 10-24 UNC 2B","offer_id":50448313352440,"sku":"Q61605","price":51.67,"currency_code":"USD","in_stock":true},{"title":"Helicoil 10-32 UNF 2B","offer_id":50448313385208,"sku":"Q61606","price":51.67,"currency_code":"USD","in_stock":true},{"title":"Helicoil 1\/4-20 UNC 2B","offer_id":50448313417976,"sku":"Q61607","price":51.67,"currency_code":"USD","in_stock":true},{"title":"Helicoil 1\/4-28 UNF 2B","offer_id":50448313450744,"sku":"Q61614","price":63.33,"currency_code":"USD","in_stock":true},{"title":"Helicoil 5\/16-18 UNC 2B","offer_id":50448313483512,"sku":"S61611","price":51.67,"currency_code":"USD","in_stock":true},{"title":"Helicoil 5\/16-24 UNF 2B","offer_id":50448313516280,"sku":"Q61616","price":63.33,"currency_code":"USD","in_stock":true},{"title":"Helicoil 3\/8-16 UNC 2B","offer_id":50448313549048,"sku":"Q61608","price":51.67,"currency_code":"USD","in_stock":true},{"title":"Helicoil 3\/8-24 UNF 2B","offer_id":50448313581816,"sku":"Q61615","price":96.67,"currency_code":"USD","in_stock":true},{"title":"Helicoil 1\/2-13 UNC 2B","offer_id":50448313614584,"sku":"Q61618","price":80.0,"currency_code":"USD","in_stock":true},{"title":"Helicoil 1\/2-20 UNF 2B","offer_id":50448313647352,"sku":"Q61617","price":80.0,"currency_code":"USD","in_stock":true},{"title":"Helicoil 5\/8-11 UNC 2B","offer_id":50448313680120,"sku":"S61612","price":96.67,"currency_code":"USD","in_stock":true},{"title":"Helicoil 5\/8-18 UNF 2B","offer_id":50448313712888,"sku":"Q61621","price":130.0,"currency_code":"USD","in_stock":true},{"title":"Helicoil 3\/4-16 UNF 2B","offer_id":50448313745656,"sku":"Q61619","price":106.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0127\/3259\/6283\/files\/Codex_Image_Sep_3_2026_09_41_12_PM_6e96a8e7-1419-4f6c-a211-37fe328789c8.png?v=1788681134","url":"https:\/\/www.toolpoint.shop\/he-il\/products\/unc-helicoil-ring-thread-gauge-go-nogo-st-2-56-1-4-28","provider":"ToolPoint","version":"1.0","type":"link"}