{"product_id":"spi-34-503-3-threaded-ring-gage-m20x1-50-metric-6g-go","title":"Spi 34-503-3 Threaded Ring Gage M20x1.50 Metric 6G Go","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SPI 34-503-3 is a Go-type threaded ring gage designed for inspecting external metric threads to Class 6G tolerance standards. Machined from Oil Hardened Non-Shrinking Steel (OHNS) and supplied as a single-ring unit, it is used to verify that a threaded workpiece falls within the acceptable tolerance band for fit and function. The Go ring must pass freely over the threaded feature; failure to do so indicates the thread is out of tolerance. Each unit ships with an NPL Traceability Certification, confirming calibration linkage to a national measurement standard. This gage weighs 1 pound and is intended for use in machine shops, manufacturing quality control, and precision assembly environments.\u003c\/p\u003e\u003cp\u003eThis gage is suited for production inspection and incoming quality control of metric-threaded fasteners, bolts, shafts, and machined components carrying an M20 x 1.50 thread form. Class 6G tolerance is the standard commercial-grade external thread classification for metric fasteners, making this gage appropriate for general-purpose manufacturing and maintenance applications across industrial and mechanical trades. Machinists, quality technicians, and tool room personnel are the primary users.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eGo-type ring gage verifies external thread acceptability per Class 6G tolerance\u003c\/li\u003e\n\u003cli\u003eM20 x 1.50 metric thread size, fine-pitch series\u003c\/li\u003e\n\u003cli\u003eConstructed from Oil Hardened Non-Shrinking Steel (OHNS) for dimensional stability and wear resistance\u003c\/li\u003e\n\u003cli\u003eNPL Traceability Certification included for compliance with documented quality systems\u003c\/li\u003e\n\u003cli\u003eSingle-ring configuration for streamlined Go inspection workflow\u003c\/li\u003e\n\u003cli\u003eWeighs 1 pound for comfortable bench and floor use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for inspection of external metric threads with an M20 x 1.50 thread form and Class 6G tolerance designation per standard metric thread gage applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThreaded ring gages are inspection tools, not installation hardware. Always clean and deburr the threaded workpiece before gaging to prevent gage wear and false readings. Store the gage in its protective case when not in use to maintain calibration integrity. Periodic recalibration by a certified metrology lab is recommended to maintain traceability and measurement confidence.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: M20 x 1.50\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Metric\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTolerance Class\u003c\/strong\u003e: 6G\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGage Type\u003c\/strong\u003e: Go\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Configuration\u003c\/strong\u003e: Single\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Oil Hardened Non-Shrinking Steel (OHNS)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTraceability Certification\u003c\/strong\u003e: NPL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\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: 34-503-3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51699893076274,"sku":"34-503-3","price":459.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/90296279b0daf164482a2d6478e8a741.jpg?v=1788382722","url":"https:\/\/voomisupply.com\/products\/spi-34-503-3-threaded-ring-gage-m20x1-50-metric-6g-go","provider":"Voomi Supply","version":"1.0","type":"link"}