{"product_id":"spi-19-427-4-class-zz-minus-plug-pin-gage-0-427-in","title":"Spi 19-427-4 Class Zz Minus Plug Pin Gage 0.427 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 19-427-4 is a Class ZZ minus plug pin gage machined to a nominal diameter of 0.427 inches with a minus tolerance of 0.0002 inches. Plug pin gages are precision inspection tools used to verify bore diameters, hole sizes, and internal feature dimensions to a known standard. The Class ZZ designation indicates a general-purpose tolerance grade suited for production floor inspection and go\/no-go gauging applications. Constructed from steel, this gage provides the dimensional stability and wear resistance required for repeatable measurement in shop environments. It is handled by quality control technicians, machinists, and metrology personnel.\u003c\/p\u003e\n\u003cp\u003eThis gage is appropriate for use in manufacturing, machining, and quality assurance settings where hole diameter verification is required. At 0.427 inches nominal diameter, it covers a common bore size encountered in general metalworking and mechanical assembly inspection. The minus tolerance designation means the gage is ground undersized relative to nominal, making it suitable as a go-gage in standard gauging practice. It is a single-piece inspection tool requiring no calibration equipment on the shop floor beyond periodic cleaning and appropriate storage.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNominal diameter of 0.427 inches for direct bore verification at that size\u003c\/li\u003e\n  \u003cli\u003eClass ZZ minus tolerance of 0.0002 inches for general-purpose production gauging\u003c\/li\u003e\n  \u003cli\u003eSteel construction provides durability and dimensional stability under shop conditions\u003c\/li\u003e\n  \u003cli\u003eSingle-piece plug gage design requires no assembly or adjustment before use\u003c\/li\u003e\n  \u003cli\u003eLightweight at 0.2 pounds for easy one-handed handling during inspection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose Class ZZ plug pin gage for use with standard gage handle sets and holders sized to accept 0.427-inch diameter plug members. Verify handle compatibility with the gage shank diameter before use.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlug pin gages are inspection tools and do not require permanent installation. Before use, clean the gage and the bore being measured to remove chips, coolant, and debris that could cause false readings or damage the gage surface. Apply light gage oil when checking ferrous bores to reduce wear. Store the gage in a protective case away from other metal tools to prevent contact damage to the precision-ground surface.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Diameter\u003c\/strong\u003e: 0.427 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance\u003c\/strong\u003e: 0.0002 inches minus\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance (mm)\u003c\/strong\u003e: 0.0002 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance Class\u003c\/strong\u003e: Class ZZ\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: 19-427-4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51703837327666,"sku":"19-427-4","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5f32656ea9f2742d45aed1a48f550e30_0c46e857-949a-4b20-9f3b-7425a2401302.jpg?v=1788418891","url":"https:\/\/voomisupply.com\/products\/spi-19-427-4-class-zz-minus-plug-pin-gage-0-427-in","provider":"Voomi Supply","version":"1.0","type":"link"}