{"product_id":"spi-29-921-4-class-zz-plus-plug-gage-0-921-in-dia","title":"Spi 29-921-4 Class Zz Plus Plug Gage 0.921 in Dia","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 29-921-4 is a Class ZZ Plus plug gage designed for precision bore and hole inspection in machining and manufacturing environments. Measuring a nominal diameter of 0.921 inches with a tolerance of 0.0002 inches, this go\/no-go style gage provides reliable pass-fail verification on the shop floor or in a quality control setting. Constructed from steel for durability and dimensional stability, it is used by machinists, tool-and-die makers, and QC inspectors who require consistent, repeatable measurement results on drilled, reamed, or bored features.\u003c\/p\u003e\n\u003cp\u003eClass ZZ Plus plug gages are appropriate for general-purpose inspection of production parts where hole diameter conformance must be verified quickly and accurately. This gage is suited for use in light manufacturing, job shops, and production facilities working to standard inch tolerances. It is particularly useful when inspecting holes sized to 0.921 inches across a range of materials and part types.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNominal measurement diameter of 0.921 inches for precise hole inspection\u003c\/li\u003e\n  \u003cli\u003eClass ZZ Plus tolerance of 0.0002 inches for general-purpose production gauging\u003c\/li\u003e\n  \u003cli\u003eSteel construction for wear resistance and long service life\u003c\/li\u003e\n  \u003cli\u003eCompact and lightweight at 0.2 pounds for easy handling during inspection\u003c\/li\u003e\n  \u003cli\u003eSingle-piece package quantity for individual replacement or supplemental use\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 inspection of 0.921-inch nominal diameter holes in standard production and quality control applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlug gages are handled and used by machinists or quality control technicians — no power source or shutoff is required. Keep the gage clean and lightly oiled when not in use to prevent corrosion on the steel surfaces. Do not force the gage into an undersized hole, as this can damage both the gage and the workpiece. Store in a protective case away from abrasive materials to maintain calibration integrity.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement Diameter\u003c\/strong\u003e: 0.921 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  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 41111600\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: 29-921-4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51723066999090,"sku":"29-921-4","price":16.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/15fa240f06e2f3836b65c0170e6fc5d4.jpg?v=1788600109","url":"https:\/\/voomisupply.com\/products\/spi-29-921-4-class-zz-plus-plug-gage-0-921-in-dia","provider":"Voomi Supply","version":"1.0","type":"link"}