{"product_id":"spi-19-642-8-class-zz-minus-plug-pin-gage-0-642-in","title":"Spi 19-642-8 Class Zz Minus Plug Pin Gage 0.642 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 19-642-8 is a Class ZZ minus plug pin gage designed for go\/no-go inspection of bored holes, drilled passages, and machined features requiring precise dimensional verification. Built from steel, this pin gage measures a nominal diameter of 0.642 inches with a minus tolerance of 0.0002 inches, making it suitable for standard-tolerance inspection work in production and quality-control environments. Class ZZ gages are the most commonly used grade for general inspection and are typically handled by machinists, toolroom technicians, and quality assurance personnel.\u003c\/p\u003e\n\u003cp\u003eThis pin gage is used in manufacturing, fabrication, and inspection settings where consistent hole-diameter verification is required. Typical applications include checking bore sizes on machined parts, verifying drill press output, and confirming hole geometry on sheet metal or cast components. The 0.642-inch diameter targets a specific nominal bore size in standard inch-measurement workflows.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eClass ZZ tolerance grade suited for general production inspection\u003c\/li\u003e\n  \u003cli\u003eMinus plug configuration for lower-limit dimensional checking\u003c\/li\u003e\n  \u003cli\u003e0.642 inch nominal diameter with 0.0002 inch tolerance\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability in shop environments\u003c\/li\u003e\n  \u003cli\u003eSingle-piece packaging for individual replacement or kit supplementation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard Class ZZ minus plug pin gage for use with pin gage handles and sets following inch-measurement conventions in general manufacturing inspection applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePin gages should be handled with clean cotton gloves or lint-free cloths to prevent corrosion from skin oils. Before use, verify the gage and the workpiece bore are at the same ambient temperature to avoid thermal expansion errors. Store the gage in its protective case when not in use, and clean and lightly oil the gage surface periodically to maintain accuracy and prevent rust.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Diameter\u003c\/strong\u003e: 0.642 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance\u003c\/strong\u003e: 0.0002 inches\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\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: 19-642-8\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51703440507186,"sku":"19-642-8","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5bd575b9c1509c511abf8a86fecd5308.jpg?v=1788416697","url":"https:\/\/voomisupply.com\/products\/spi-19-642-8-class-zz-minus-plug-pin-gage-0-642-in","provider":"Voomi Supply","version":"1.0","type":"link"}