{"product_id":"spi-19-991-9-class-zz-minus-plug-pin-gage-0-991-in","title":"Spi 19-991-9 Class Zz Minus Plug Pin Gage 0.991 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SPI 19-991-9 is a Class ZZ minus plug pin gage with a nominal diameter of 0.991 inches, manufactured from steel. It is used to verify that a hole or bore meets minimum acceptable dimensional tolerances. The minus designation means the gage is ground to the lower boundary of the tolerance range, making it suitable for go-gage applications where the goal is to confirm a hole is not undersized. With a tolerance of 0.000200 inches (0.0051 mm), this gage provides reliable dimensional verification for precision inspection work. Machinists, quality control technicians, and tool-and-die professionals install and use these gages in production and inspection environments.\u003c\/p\u003e\u003cp\u003eThis plug pin gage is suited for use in precision measurement applications across manufacturing, machining, and quality assurance operations. It is appropriate for inspecting bored, drilled, or reamed holes in metal components where dimensional conformance to tight tolerances is required. Class ZZ gages are commonly applied in commercial-grade inspection tasks, making this gage a practical choice for general shop and production-floor use where workshop-grade accuracy is specified.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNominal diameter of 0.991 inches for direct-fit bore inspection\u003c\/li\u003e\n\u003cli\u003eClass ZZ minus tolerance designation for go-gage lower-limit verification\u003c\/li\u003e\n\u003cli\u003eTolerance of 0.000200 inches (0.0051 mm) for precision dimensional control\u003c\/li\u003e\n\u003cli\u003eSteel construction for durability and dimensional stability under repeated use\u003c\/li\u003e\n\u003cli\u003eIndividual unit packaging suitable for single-gage inventory and toolroom use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a Class ZZ minus plug pin gage for use with standard pin gage handles and holders accepting 0.991-inch diameter gage pins in commercial inspection applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003ePlug pin gages are used by quality control technicians and machinists and do not require permanent installation. Clean the gage pin and bore thoroughly before use to prevent debris from affecting measurement accuracy. Store the gage in a protective case away from moisture and temperature extremes to preserve calibration and surface finish. Handle with clean cotton gloves or a lint-free cloth to prevent corrosion from skin oils.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Diameter\u003c\/strong\u003e: 0.991 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTolerance\u003c\/strong\u003e: 0.000200 inches (0.0051 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass\u003c\/strong\u003e: ZZ Minus\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\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 19-991-9\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51714720399666,"sku":"19-991-9","price":16.58,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f0173d21ab3e4ce6b80ffcb589de51d4.jpg?v=1788505395","url":"https:\/\/voomisupply.com\/products\/spi-19-991-9-class-zz-minus-plug-pin-gage-0-991-in","provider":"Voomi Supply","version":"1.0","type":"link"}