{"product_id":"spi-34-500-9-threaded-ring-gage-m18-x-1-50-class-6g-no-go","title":"Spi 34-500-9 Threaded Ring Gage M18 X 1.50 Class 6G No Go","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SPI 34-500-9 is a No Go threaded ring gage designed to verify external metric threads to M18 x 1.50 specifications at a Class 6G tolerance. Machined from Oil Hardened Non-Shrinking Steel (OHNS), also referred to as tool steel, this single-ring gage provides the dimensional resistance and wear characteristics required for reliable thread inspection in production and quality-control environments. NPL traceability certification is included, making it suitable for use in shops and facilities where documented measurement traceability is required. Machinists, quality technicians, and inspection personnel use this gage to confirm that threaded components do not pass an out-of-tolerance condition.\u003c\/p\u003e\u003cp\u003eThis gage is used in machine shops, manufacturing facilities, and inspection departments where metric fastener threads must be verified against M18 x 1.50 Class 6G standards. The No Go function confirms that an externally threaded part does not exceed the maximum material condition for the specified tolerance class. It is a single-ring design, intended for use alongside a corresponding Go ring gage to complete a full pass-fail thread inspection routine. Applications include production line inspection of bolts, studs, and threaded shafts in automotive, industrial, and general mechanical manufacturing.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNo Go ring gage verifies M18 x 1.50 external metric threads at Class 6G tolerance\u003c\/li\u003e\n\u003cli\u003eOil Hardened Non-Shrinking Steel (OHNS) construction for dimensional stability and wear resistance\u003c\/li\u003e\n\u003cli\u003eNPL traceability certification included for use in documented quality systems\u003c\/li\u003e\n\u003cli\u003eSingle-ring design for dedicated No Go inspection function\u003c\/li\u003e\n\u003cli\u003eWeighs 1 pound — compact enough for bench or floor-level inspection stations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for inspection of externally threaded metric fasteners and components with M18 x 1.50 thread form at Class 6G tolerance per applicable metric thread standards.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThreaded ring gages are handled and stored by quality technicians and inspection personnel, not installed in a mechanical system. Keep the gage clean and lightly oiled when not in use to prevent corrosion and maintain calibration integrity. Do not force the gage onto a threaded part — the No Go gage should not fully engage a conforming thread. Periodic re-calibration against NPL-traceable masters is recommended per your facility quality program.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: M18 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 Classification\u003c\/strong\u003e: Class 6G\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGo\/No Go\u003c\/strong\u003e: No Go\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Configuration\u003c\/strong\u003e: Single Ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Oil Hardened Non-Shrinking Steel (OHNS \/ Tool Steel)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTraceability Standard\u003c\/strong\u003e: NPL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\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: 34-500-9\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51689264152882,"sku":"34-500-9","price":423.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1738132a3f851b759cabd130d565b4e0.jpg?v=1788256507","url":"https:\/\/voomisupply.com\/products\/spi-34-500-9-threaded-ring-gage-m18-x-1-50-class-6g-no-go","provider":"Voomi Supply","version":"1.0","type":"link"}