{"product_id":"spi-37-113-8-plug-thread-gage-m8x1-25-6h-single-end-go","title":"Spi 37-113-8 Plug Thread Gage M8x1.25 6H Single End Go","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SPI 37-113-8 is a single-end Go plug thread gage designed to verify that an M8x1.25 internally threaded feature meets the minimum material condition required by the 6H tolerance class. The gage member enters the threaded bore and, when it passes through completely, confirms the thread form and pitch diameter fall within the acceptable Go limit. This type of gage is a core inspection tool in machining, fabrication, and assembly environments where metric fastener threads must meet dimensional standards. The handle is not included and must be sourced separately to match the gage shank diameter.\u003c\/p\u003e\u003cp\u003eThis gage is suited for production floor inspection and quality-control bench work in manufacturing, automotive, aerospace, and general industrial settings. It is used wherever M8x1.25 metric threads are tapped into components and must be verified for conformance before assembly. Single-end Go gages are commonly paired with a separate No-Go gage to complete a full thread acceptance inspection per applicable tolerancing standards.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eGo member verifies minimum material condition of M8x1.25 internal threads\u003c\/li\u003e\n\u003cli\u003e6H tolerance class — standard fit classification for commercial metric fastener threads\u003c\/li\u003e\n\u003cli\u003eSingle-end design for streamlined Go-only inspection routines\u003c\/li\u003e\n\u003cli\u003eANSI traceability certification included for audit and calibration documentation\u003c\/li\u003e\n\u003cli\u003eCalibrated to NIST-traceable standards\u003c\/li\u003e\n\u003cli\u003eHandle not included — compatible with standard plug gage handles sized to the shank\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for inspection of M8x1.25 internally threaded workpieces held to the 6H tolerance class. Requires a separately purchased plug gage handle sized to fit the gage shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003ePlug thread gages are used by machinists, quality technicians, and inspection personnel — not installed in a system, but handled during part inspection. Always clean the threaded bore and the gage member before use to prevent false readings from chips or coolant. Apply light, even hand pressure when inserting the Go member — never force a plug gage with tools, as this can damage the gage and yield inaccurate results. Store the gage in its case away from other metal tooling to prevent contact damage to the precision thread form.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: M8x1.25\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: Go\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Configuration\u003c\/strong\u003e: Single End\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandle Included\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTraceability Certification\u003c\/strong\u003e: ANSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: NIST\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 1.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 0.31 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 0.31 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.22 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 41111619\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 37-113-8\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51723968315698,"sku":"37-113-8","price":68.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/22cb3cd232c92b30341a15aa3c46fc38.jpg?v=1788610814","url":"https:\/\/voomisupply.com\/products\/spi-37-113-8-plug-thread-gage-m8x1-25-6h-single-end-go","provider":"Voomi Supply","version":"1.0","type":"link"}