{"product_id":"spi-29-542-8-class-zz-plus-plug-gage-0-542-in","title":"Spi 29-542-8 Class Zz Plus Plug Gage 0.542 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 29-542-8 is a Class ZZ Plus plug gage used to verify inside diameters in precision machining and inspection workflows. It measures a nominal bore diameter of 0.542 inches with a tolerance of 0.0002 inches, placing it in the Class ZZ Plus accuracy tier suited for general-purpose go\/no-go inspection. Constructed from steel, this gage is built to withstand repeated use in production and quality-control environments. Machinists, toolroom technicians, and quality inspectors use plug gages like this one to confirm that drilled, reamed, or bored holes meet drawing specifications before parts advance to assembly.\u003c\/p\u003e\n\u003cp\u003eThis gage is appropriate for use in job shops, manufacturing facilities, and inspection departments where hole-diameter verification is part of routine first-article or in-process inspection. It is sized for applications requiring a 0.542-inch nominal bore check, which commonly appears in mechanical component machining. The compact, single-piece design makes it easy to handle during bench inspection or on the shop floor.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNominal measurement diameter of 0.542 inches for precise bore verification\u003c\/li\u003e\n  \u003cli\u003eClass ZZ Plus tolerance of 0.0002 inches for general-purpose inspection accuracy\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability and resistance to wear over repeated use\u003c\/li\u003e\n  \u003cli\u003eSingle-piece plug design for straightforward go\/no-go inspection workflows\u003c\/li\u003e\n  \u003cli\u003eLightweight at 0.2 pounds for easy bench or floor handling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose Class ZZ Plus plug gage for inspecting 0.542-inch nominal inside diameters in standard machining and quality-control applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlug gages are handled by machinists and quality technicians and require no permanent installation. Before use, clean both the gage and the bore to be measured to remove chips, coolant, or debris that could affect readings. Do not force the gage into an undersized bore, as this can damage the gage surface and compromise measurement accuracy. Store the gage in a protective case away from abrasive materials to maintain its calibrated tolerance.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement Diameter\u003c\/strong\u003e: 0.542 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance\u003c\/strong\u003e: 0.0002 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGage Class\u003c\/strong\u003e: ZZ Plus\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: 29-542-8\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51690295198002,"sku":"29-542-8","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5f32656ea9f2742d45aed1a48f550e30_82830312-5623-44e8-aef0-ed80f2f8f10e.jpg?v=1788268307","url":"https:\/\/voomisupply.com\/products\/spi-29-542-8-class-zz-plus-plug-gage-0-542-in","provider":"Voomi Supply","version":"1.0","type":"link"}