{"product_id":"spi-19-818-4-class-zz-minus-plug-pin-gage-0-818-in","title":"Spi 19-818-4 Class Zz Minus Plug Pin Gage 0.818 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 19-818-4 is a Class ZZ minus plug pin gage with a 0.818-inch nominal diameter, manufactured from steel. Plug pin gages are precision measurement tools used to verify bore and hole dimensions against defined tolerances. The Class ZZ designation indicates a commercial-grade tolerance class appropriate for general inspection and production measurement work. This gage holds a tolerance of 0.000200 inches, making it suitable for checking hole acceptance in moderate-precision manufacturing and quality control environments. It is typically used by machinists, tool and die technicians, quality inspectors, and skilled trades professionals performing dimensional verification tasks.\u003c\/p\u003e\n\u003cp\u003eThis plug gage is suited for general-purpose shop floor use where hole diameter verification is required during fabrication, assembly, or incoming inspection. The minus designation means the gage is ground to the lower boundary of the specified diameter, which is the standard configuration for go-gage checking applications. It is appropriate for use in metalworking, maintenance and repair operations, and light industrial production settings.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eClass ZZ tolerance grade for commercial-grade dimensional inspection\u003c\/li\u003e\n  \u003cli\u003e0.818-inch nominal diameter for precise bore verification\u003c\/li\u003e\n  \u003cli\u003eMinus designation for go-gage lower-boundary measurement\u003c\/li\u003e\n  \u003cli\u003e0.000200-inch tolerance for consistent and repeatable readings\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability in production and shop environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a direct-use plug pin gage for verifying 0.818-inch nominal diameter holes and bores in general industrial and manufacturing inspection applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlug pin gages are handled and stored by quality control technicians and machinists following standard gage-handling procedures. Gages should be kept clean and lightly oiled when stored to prevent corrosion and maintain dimensional integrity. Do not force the gage into a bore; improper insertion can damage both the gage and the workpiece. Periodic calibration against a certified master is recommended to confirm ongoing accuracy.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Diameter\u003c\/strong\u003e: 0.818 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance\u003c\/strong\u003e: 0.000200 inches (0.0002 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance Class\u003c\/strong\u003e: Class 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\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: 19-818-4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51692436652338,"sku":"19-818-4","price":15.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a0784bb28ebc1186c14d6675117f7689.jpg?v=1788297442","url":"https:\/\/voomisupply.com\/products\/spi-19-818-4-class-zz-minus-plug-pin-gage-0-818-in","provider":"Voomi Supply","version":"1.0","type":"link"}