{"product_id":"vermont-gage-361141020-threaded-ring-gage-1-2-20-unf","title":"Vermont Gage 361141020 Threaded Ring Gage 1\/2-20 Unf","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VERMONT GAGE 361141020 is a single-ring threaded ring gage used to verify the external thread form and pitch diameter of fasteners and threaded components. This is a Go-class gage, meaning it confirms that a threaded part meets the minimum acceptable thread geometry and will assemble properly with a mating component. Manufactured from tool steel to maintain dimensional stability under repeated use, it is sized for 1\/2-20 UNF threads and rated to Class 3A tolerances. Machinists, quality control technicians, and toolroom personnel use this gage as part of go\/no-go inspection routines on production or job-shop floors.\u003c\/p\u003e\n\u003cp\u003eThis gage is applied wherever 1\/2-20 UNF external threads require dimensional verification to Class 3A tolerance standards. Class 3A represents a close-tolerance fit commonly specified for high-strength fastener applications in aerospace, automotive, and precision mechanical assemblies. The Go ring is threaded onto the workpiece by hand; a conforming part will accept the gage through the full thread length. It is suited for use at incoming inspection stations, in-process quality checks, and final acceptance testing.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGo designation confirms external thread pitch diameter meets Class 3A minimum tolerance\u003c\/li\u003e\n  \u003cli\u003e1\/2-20 UNF thread size for fine-pitch unified national thread inspection\u003c\/li\u003e\n  \u003cli\u003eTool steel construction resists wear and maintains calibration over extended service\u003c\/li\u003e\n  \u003cli\u003eSingle-ring design for dedicated Go-function inspection\u003c\/li\u003e\n  \u003cli\u003eTraceable to NIST standards for use in calibrated quality systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for inspection of external 1\/2-20 UNF Class 3A threaded workpieces in accordance with unified inch screw thread standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThreaded ring gages are handled and used by quality technicians and machinists; no power tools or utility shutoffs are required for gage use. Thread the Go ring onto the workpiece by hand only — do not force or use a wrench, as this can damage both the gage and the part being inspected. Store gages in a protective case away from abrasive materials and temperature extremes to preserve calibration. Periodic recertification against NIST-traceable masters is recommended to maintain measurement integrity in ISO or AS9100 quality environments.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/2-20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClassification\u003c\/strong\u003e: Class 3A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGo\/No Go\u003c\/strong\u003e: 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: Tool Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: NIST\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: VERMONT GAGE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 361141020\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VERMONT GAGE","offers":[{"title":"Default Title","offer_id":51736912593202,"sku":"361141020","price":181.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/aab93e4c0f1b5adc81b3328ccfeeb851_3bc779dd-d9c0-42c5-a050-b012f816d63d.jpg?v=1788781846","url":"https:\/\/voomisupply.com\/products\/vermont-gage-361141020-threaded-ring-gage-1-2-20-unf","provider":"Voomi Supply","version":"1.0","type":"link"}