{"product_id":"spi-29-812-5-class-zz-plus-plug-gage-0-812-inch","title":"Spi 29-812-5 Class Zz Plus Plug Gage 0.812 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 29-812-5 is a Class ZZ Plus plug gage designed for precision hole inspection in machine shops, toolrooms, and manufacturing environments. It measures bores at a nominal diameter of 0.812 inches with a tolerance of 0.0002 inches, making it suitable for go\/no-go inspection of machined holes where close dimensional control is required. The gage body is constructed from steel for durability under repeated use. Machinists, quality technicians, and tool room personnel use plug gages like this one to verify that drilled, reamed, or bored holes fall within specified tolerance limits before parts advance to the next stage of production.\u003c\/p\u003e\n\u003cp\u003eThis plug gage is used in production inspection and quality assurance settings where bore diameter must be confirmed to tight tolerances. It is appropriate for general metalworking, automotive component inspection, aerospace fabrication support, and any precision machining operation requiring verification of a 0.812-inch nominal bore. Class ZZ Plus designation indicates the gage meets the tolerance class commonly applied to production-grade inspection work rather than master or reference gage applications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNominal measurement diameter of 0.812 inches for direct bore inspection\u003c\/li\u003e\n  \u003cli\u003eTolerance of 0.0002 inches, meeting Class ZZ Plus accuracy requirements\u003c\/li\u003e\n  \u003cli\u003eSteel construction for wear resistance and dimensional stability\u003c\/li\u003e\n  \u003cli\u003eSingle-piece package quantity, allowing individual unit procurement\u003c\/li\u003e\n  \u003cli\u003eCompact and lightweight at 0.2 pounds for easy bench and in-line use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a production-grade plug gage for inspecting machined holes with a nominal diameter of 0.812 inches in any workpiece material where Class ZZ Plus tolerance standards apply.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlug gages are handled and used by machinists and quality control technicians. Before use, clean the gage and the bore being inspected to remove chips, coolant, and debris that could affect the measurement reading. Do not force the gage through a bore under excessive pressure, as this can damage the gage surface and introduce measurement error. Store the gage in its protective case away from temperature extremes to maintain dimensional stability.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement Diameter\u003c\/strong\u003e: 0.812 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance\u003c\/strong\u003e: 0.0002 inches (0.0002 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGage Class\u003c\/strong\u003e: Class 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: 29-812-5\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51702270230834,"sku":"29-812-5","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cbb77857699299161e920ad5f9316150.jpg?v=1788410270","url":"https:\/\/voomisupply.com\/products\/spi-29-812-5-class-zz-plus-plug-gage-0-812-inch","provider":"Voomi Supply","version":"1.0","type":"link"}