{"product_id":"spi-29-780-4-class-zz-plus-plug-gage-0-78-inch","title":"Spi 29-780-4 Class Zz Plus Plug Gage 0.78 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 29-780-4 is a Class ZZ Plus plug gage designed for precision hole measurement in manufacturing and inspection environments. It measures bore diameters at 0.78 inches with a tolerance of 0.0002 inches, making it suitable for go\/no-go inspection work where tight dimensional control is required. Constructed from steel for durability and dimensional stability, this gage is a standard tool for machinists, quality control technicians, and toolroom professionals who need reliable, repeatable results on the shop floor or in the inspection room.\u003c\/p\u003e\n\u003cp\u003eThis plug gage is used in production and quality assurance settings to verify that drilled, reamed, or bored holes meet specified diameter tolerances. It is appropriate for both incoming inspection and in-process checks on metal components. Typical applications include verifying hole sizes on machined parts, fixtures, and assemblies where a 0.78-inch nominal bore diameter is specified.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eClass ZZ Plus tolerance class for precision go\/no-go inspection\u003c\/li\u003e\n  \u003cli\u003e0.78-inch nominal measurement diameter\u003c\/li\u003e\n  \u003cli\u003e0.0002-inch tolerance for tight dimensional verification\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability and wear resistance\u003c\/li\u003e\n  \u003cli\u003eSingle-piece package quantity suits individual technician use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard Class ZZ Plus plug gage suitable for inspection of 0.78-inch nominal bore diameters in general machining and quality control applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlug gages are handled and used by machinists, toolroom staff, and quality control inspectors — no power tools or electrical shutoff is required. Keep the gage clean and lightly oiled when not in use to prevent corrosion and preserve accuracy. Do not force the gage into an undersized hole, as this can damage the gage or the workpiece. Store in a protective case away from abrasive materials and temperature extremes to maintain dimensional integrity.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement Diameter\u003c\/strong\u003e: 0.78 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\u003eTolerance 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: 29-780-4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51689593471282,"sku":"29-780-4","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a45fadf3326947a4551b9fb2e237e95a.jpg?v=1788261567","url":"https:\/\/voomisupply.com\/products\/spi-29-780-4-class-zz-plus-plug-gage-0-78-inch","provider":"Voomi Supply","version":"1.0","type":"link"}