{"product_id":"spi-29-057-7-class-zz-plus-plug-gage-0-057-inch","title":"Spi 29-057-7 Class Zz Plus Plug Gage 0.057 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 29-057-7 is a Class ZZ Plus plug gage designed for precision go\/no-go inspection of small-diameter holes and bores. Built from steel, this gage checks that a hole measures 0.057 inches in diameter within a tolerance of 0.0002 inches. Class ZZ is the standard commercial-grade tolerance class for plug gages, making the 29-057-7 appropriate for production inspection work where consistent dimensional verification is required. Machinists, quality control technicians, and tool room personnel use plug gages like this one as part of routine in-process and final inspection procedures.\u003c\/p\u003e\n\u003cp\u003eThis gage is suited for verifying small-diameter features in machined components across general manufacturing, tool and die, aerospace, and automotive applications. The 0.057-inch diameter range addresses fine-bore inspection needs that are common in precision machined parts where hole size directly affects fit, function, and assembly. It is used at inspection stations, machine-side, or in tool rooms where tight dimensional control is maintained.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eClass ZZ Plus tolerance class for commercial-grade precision inspection\u003c\/li\u003e\n  \u003cli\u003e0.057-inch nominal diameter for fine-bore go\/no-go checking\u003c\/li\u003e\n  \u003cli\u003eTolerance of 0.0002 inches ensures repeatable dimensional verification\u003c\/li\u003e\n  \u003cli\u003eSteel construction provides durability for repeated use in production environments\u003c\/li\u003e\n  \u003cli\u003eSingle-piece packaging suitable for individual replacement or toolroom stocking\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard Class ZZ Plus plug gage for go\/no-go inspection of 0.057-inch diameter holes in machined components across general manufacturing and precision fabrication environments.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlug gages are handled and used by quality control technicians and machinists following standard metrology practices. Before use, clean the gage and the bore being inspected to remove chips, coolant, and debris that could affect readings. Do not force a plug gage into an undersized hole, as this can damage the gage surface and compromise calibration. Store the gage in its case or a protected location to prevent corrosion and surface wear between uses.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter of Measurement\u003c\/strong\u003e: 0.057 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 (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  \u003cli\u003e\n\u003cstrong\u003eGage Class\u003c\/strong\u003e: ZZ Plus\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: 29-057-7\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51722299998514,"sku":"29-057-7","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/dd74e93973b383950c26427ac996826f.jpg?v=1788588894","url":"https:\/\/voomisupply.com\/products\/spi-29-057-7-class-zz-plus-plug-gage-0-057-inch","provider":"Voomi Supply","version":"1.0","type":"link"}