{"product_id":"spi-34-329-3-plug-thread-gage-7-8-20-6h-single-end-no-go","title":"Spi 34-329-3 Plug Thread Gage 7\/8-20 6H Single End No Go","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 34-329-3 is a single-end No Go plug thread gage designed to verify internal thread conformance to the 7\/8-20 thread form at 6H tolerance class. Manufactured from steel, this gage checks whether a threaded hole falls outside the acceptable tolerance range, rejecting parts that do not meet specification. It is a standard inspection tool used on the shop floor, in quality labs, and at receiving inspection stations. NIST traceability is included, supporting documentation requirements in regulated manufacturing and calibration-controlled environments. A size 4 handle is required for use but is sold separately.\u003c\/p\u003e\n\u003cp\u003eThis gage is suited for production inspection of 7\/8-20 internally threaded components in machining, assembly, and manufacturing operations. It is appropriate for both high-volume production lines and low-volume precision work where thread quality must be verified against ANSI standards. The single-end No Go configuration is typically paired with a Go gage to complete a full thread inspection routine. Handle not included — order a compatible size 4 plug gage handle separately before use.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNo Go member checks that internal threads do not exceed the maximum material condition limit for 7\/8-20 at 6H class\u003c\/li\u003e\n  \u003cli\u003eNIST traceability certification included, meeting documentation needs for ISO and AS9100 quality systems\u003c\/li\u003e\n  \u003cli\u003eConforms to ANSI and NIST standards for thread gage manufacture and calibration\u003c\/li\u003e\n  \u003cli\u003eSteel construction provides durability and dimensional stability under repeated inspection use\u003c\/li\u003e\n  \u003cli\u003eSingle-end design for straightforward No Go-only inspection workflows\u003c\/li\u003e\n  \u003cli\u003eSize 4 handle interface — compatible with standard plug gage handles (handle sold separately)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with size 4 plug gage handles to inspect internally threaded workpieces with a 7\/8-20 thread form at 6H tolerance class per ANSI standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThread gages should be handled and stored according to standard metrology practices to preserve accuracy. Before use, clean both the gage member and the threaded hole to remove chips, oil, and debris that could produce false readings. Do not force the No Go member into a threaded hole — proper technique relies on hand pressure only, and resistance or free passage determines acceptance or rejection. Gages should be recalibrated at intervals appropriate to usage frequency and the calibration management requirements of the governing quality system.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 7\/8-20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance Class\u003c\/strong\u003e: 6H\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGage Type\u003c\/strong\u003e: No Go\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Configuration\u003c\/strong\u003e: Single End\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHandle Size\u003c\/strong\u003e: 4 (not included)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, NIST\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTraceability Certification\u003c\/strong\u003e: NIST\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SPI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 34-329-3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51701833826610,"sku":"34-329-3","price":212.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1b31e5fb64adb0235d373351639d6f76.jpg?v=1788405730","url":"https:\/\/voomisupply.com\/products\/spi-34-329-3-plug-thread-gage-7-8-20-6h-single-end-no-go","provider":"Voomi Supply","version":"1.0","type":"link"}