{"product_id":"spi-19-660-0-class-zz-minus-plug-pin-gage-0-66-inch","title":"Spi 19-660-0 Class Zz Minus Plug Pin Gage 0.66 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 19-660-0 is a Class ZZ minus plug pin gage used to verify hole diameters and bore tolerances in precision machining and inspection workflows. At 0.66 inches in diameter with a minus tolerance of 0.0002 inches, this gage is a go-type instrument — it confirms that a hole is at or above minimum acceptable size. Constructed from steel for durability and dimensional stability, it is a standard tool in quality control environments where tight-tolerance verification is required. Machinists, toolmakers, and quality inspectors use plug gages like this one during in-process and final inspection of drilled, reamed, or bored holes.\u003c\/p\u003e\n\u003cp\u003eThis gage is suited for use in manufacturing, machine shops, and inspection departments where hole diameter conformance must be verified against a defined tolerance. Class ZZ plug gages are general-purpose inspection tools appropriate for production-level go\/no-go gauging applications. The minus designation indicates the gage is ground to the lower limit of the tolerance range, functioning as a go gage to confirm minimum acceptable hole size. It is a single-end gage intended for manual hand use.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0.66 inch nominal diameter for direct hole-size verification\u003c\/li\u003e\n  \u003cli\u003eClass ZZ tolerance rating suitable for general production inspection\u003c\/li\u003e\n  \u003cli\u003eMinus tolerance of 0.0002 inches for go-gage lower-limit gauging\u003c\/li\u003e\n  \u003cli\u003eSteel construction for wear resistance and dimensional stability\u003c\/li\u003e\n  \u003cli\u003eCompact and lightweight at 0.2 pounds for easy hand use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose Class ZZ minus plug gage for verifying 0.66 inch nominal diameter bores in standard production and inspection applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlug gages are handled and used by machinists and quality control inspectors — no installation is required. Store the gage in a protective case away from temperature extremes and contaminants to maintain calibration. Clean the gage and the bore with a lint-free cloth before use to prevent false readings. Do not force the gage into an undersized hole, as this can damage the gage land and compromise its accuracy.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Diameter\u003c\/strong\u003e: 0.66 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\u003eTolerance (Decimal Inch)\u003c\/strong\u003e: 0.0002 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance (mm)\u003c\/strong\u003e: 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: 19-660-0\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51689397322034,"sku":"19-660-0","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6b467af9ef5a8f6349418d65a79611cb.jpg?v=1788258858","url":"https:\/\/voomisupply.com\/products\/spi-19-660-0-class-zz-minus-plug-pin-gage-0-66-inch","provider":"Voomi Supply","version":"1.0","type":"link"}