{"product_id":"spi-34-405-1-plug-thread-gage-9-16-12-2b-double-end","title":"Spi 34-405-1 Plug Thread Gage 9\/16-12 2B Double End","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 34-405-1 is a double-end plug thread gage designed to verify 9\/16-12 UNC internal threads to the 2B tolerance class. One end carries the Go member and the other carries the No Go member, allowing a technician to confirm both the minimum and maximum thread acceptance limits in a single tool. The gage ships with a size 3 handle and includes a traceable calibration certificate referenced to NIST standards. Machinists, quality control inspectors, and precision maintenance technicians use this type of gage to validate threaded holes in manufactured parts, fixtures, and field-machined components.\u003c\/p\u003e\n\u003cp\u003eThis gage is suited for production floor inspection, incoming material verification, and field QC work wherever 9\/16-12 UNC threaded holes must meet 2B class tolerances. The double-end configuration keeps both Go and No Go members on one handle, reducing tool changeover time during repetitive inspection runs. The included NIST-traceable certification supports documented quality programs, ISO shop requirements, and audit-ready inspection records.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGo and No Go members on a single double-end handle for complete 2B acceptance checks\u003c\/li\u003e\n  \u003cli\u003eCalibrated to NIST standards with traceability certification included\u003c\/li\u003e\n  \u003cli\u003eSize 3 handle included — no separate handle purchase required\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability in production and field inspection environments\u003c\/li\u003e\n  \u003cli\u003eVerifies 9\/16-12 UNC threads to 2B tolerance class\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for inspection of 9\/16-12 UNC internal threads conforming to 2B tolerance class specifications. Fits standard size 3 plug gage handles.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlug thread gages are used by machinists and quality inspectors — no power source or lockout is required. Handle the gage members carefully to avoid nicks or burrs that would affect measurement accuracy. Store the gage in a protective case away from other metal tools. Periodic re-calibration against a NIST-traceable master is recommended to maintain certification validity.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 9\/16-12\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance Class\u003c\/strong\u003e: 2B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Double End (Go \/ No Go)\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: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHandle Included\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTraceability Standard\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: 34-405-1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51697490329906,"sku":"34-405-1","price":226.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f36fcec21026bbb348eeef75840f232e.jpg?v=1788352032","url":"https:\/\/voomisupply.com\/products\/spi-34-405-1-plug-thread-gage-9-16-12-2b-double-end","provider":"Voomi Supply","version":"1.0","type":"link"}