{"product_id":"spi-19-972-9-class-zz-minus-plug-pin-gage-0-972-in","title":"Spi 19-972-9 Class Zz Minus Plug Pin Gage 0.972 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 19-972-9 is a Class ZZ minus plug pin gage with a nominal measurement diameter of 0.972 inches and a tolerance of 0.0002 inches. Plug pin gages in the Class ZZ designation are go\/no-go precision measurement tools used to verify hole diameter, bore size, and dimensional conformance in manufactured parts. This gage is machined from steel for durability and dimensional stability. Machinists, quality control technicians, and metrology lab personnel use plug gages as a fast, reliable method to confirm that drilled or bored holes meet print tolerances without requiring a CMM or inside micrometer setup.\u003c\/p\u003e\n\u003cp\u003eThis gage is suited for inspection of machined components in manufacturing, tool-and-die, automotive, aerospace, and general fabrication environments. The 0.972-inch diameter range covers a common bore size in mechanical assemblies. Class ZZ is a working-gage class appropriate for production floor inspection rather than master-gage calibration standards. The minus designation indicates the gage is manufactured to the minus side of the tolerance band, which is standard practice for go-type plug gages used to check minimum hole size acceptance.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eClass ZZ tolerance class — suitable for production floor go\/no-go inspection\u003c\/li\u003e\n  \u003cli\u003eMinus tolerance designation — manufactured to the lower side of the tolerance band for correct go-gage function\u003c\/li\u003e\n  \u003cli\u003e0.0002-inch (0.0002 mm) tolerance for reliable dimensional verification\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability and dimensional stability under repeated use\u003c\/li\u003e\n  \u003cli\u003e0.972-inch nominal measurement diameter covering a common bore size\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a working-class plug pin gage for inspection of 0.972-inch nominal bores and holes in production machining and quality control applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlug pin gages are handled by quality control technicians and machinists during part inspection. Clean the gage and the bore being measured before use to avoid false readings caused by chips or coolant residue. Store the gage in a protective case away from other metal tooling to prevent nicks or wear to the gage surface. Periodic recalibration against a certified master gage is recommended to confirm the gage remains within its stated tolerance class.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGage Class\u003c\/strong\u003e: ZZ Minus\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement Diameter\u003c\/strong\u003e: 0.972 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance\u003c\/strong\u003e: 0.0002 inches (0.0002 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2 pounds\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: 19-972-9\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51716558913842,"sku":"19-972-9","price":16.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5f32656ea9f2742d45aed1a48f550e30_f81ce85b-2344-49c1-9317-1ff7fe77c9a1.jpg?v=1788527854","url":"https:\/\/voomisupply.com\/products\/spi-19-972-9-class-zz-minus-plug-pin-gage-0-972-in","provider":"Voomi Supply","version":"1.0","type":"link"}