{"product_id":"spi-29-681-4-class-zz-plus-plug-gage-0-681-in","title":"Spi 29-681-4 Class Zz Plus Plug Gage 0.681 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 29-681-4 is a Class ZZ Plus plug gage designed for precision go\/no-go dimensional inspection of bored holes, machined passages, and manufactured features requiring close tolerance verification. Built from steel, this plug gage measures a nominal diameter of 0.681 inches with a tolerance of 0.0002 inches, providing the accuracy required for quality control work in machine shops, manufacturing facilities, and inspection departments. It is used by machinists, metrology technicians, and quality assurance personnel who need a reliable, repeatable method of verifying hole diameter conformance to print specifications.\u003c\/p\u003e\n\u003cp\u003eThis gage is suited for inspection of drilled, reamed, or bored holes in production and job-shop environments where Class ZZ tolerance standards apply. Class ZZ is the most common tolerance class for general-purpose plug gages used in commercial and industrial manufacturing inspection. The 0.681-inch diameter makes it applicable to a specific range of machined bores where that nominal size is called out on engineering drawings. Its compact form and single-piece construction allow for quick, repeatable checks without fixturing.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNominal measurement diameter of 0.681 inches for precise hole inspection\u003c\/li\u003e\n  \u003cli\u003eClass ZZ Plus tolerance of 0.0002 inches for reliable go\/no-go verification\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability in shop floor and inspection room environments\u003c\/li\u003e\n  \u003cli\u003eCompact single-unit design allows fast, repeatable dimensional checks\u003c\/li\u003e\n  \u003cli\u003eConforms to Class ZZ standard, the recognized commercial-grade plug gage classification\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose Class ZZ plug gage for inspecting machined holes with a nominal diameter of 0.681 inches across standard manufacturing and quality control applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlug gages are handled and used by metrology technicians and quality control personnel, not installed in a system. Before use, clean the gage and the hole being measured to remove chips, coolant, or debris that could affect accuracy. Do not force the gage through an undersized bore, as this can damage the gage surface and compromise calibration. Store the gage in a protective case away from moisture and 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: 0.681 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance\u003c\/strong\u003e: 0.0002 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGage Class\u003c\/strong\u003e: ZZ Plus\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2 pounds\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: 29-681-4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51689287909682,"sku":"29-681-4","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5f32656ea9f2742d45aed1a48f550e30.jpg?v=1788256854","url":"https:\/\/voomisupply.com\/products\/spi-29-681-4-class-zz-plus-plug-gage-0-681-in","provider":"Voomi Supply","version":"1.0","type":"link"}