{"product_id":"spi-29-689-7-class-zz-plus-plug-gage-0-689-in","title":"Spi 29-689-7 Class Zz Plus Plug Gage 0.689 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 29-689-7 is a Class ZZ Plus plug gage designed to verify the inside diameter of holes, bores, and machined features to a nominal size of 0.689 inches. Built from steel, this fixed-limit gage provides a straightforward go\/no-go check without the need for readout instruments. It is used on the shop floor by machinists, quality technicians, and tool-and-die professionals who need fast, repeatable confirmation that a workpiece meets dimensional tolerance. The 0.689-inch nominal diameter and a tolerance of 0.0002 inches make this gage appropriate for moderate-precision inspection work consistent with Class ZZ standards.\u003c\/p\u003e\n\u003cp\u003eThis plug gage is suited for general-purpose inspection in job shops, production machining environments, and maintenance departments. It is used wherever inside diameter verification is required as part of a quality control workflow. The compact size and low weight of 0.2 pounds make it easy to handle at a workbench or alongside machine tooling. Class ZZ is the standard tolerance class for general shop and inspection use, making this gage appropriate for a wide range of hole-checking applications in both ferrous and non-ferrous workpieces.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0.689-inch nominal measurement diameter for fixed-limit bore inspection\u003c\/li\u003e\n  \u003cli\u003eClass ZZ Plus tolerance grade at 0.0002 inches for reliable go\/no-go gauging\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability and dimensional stability in shop environments\u003c\/li\u003e\n  \u003cli\u003eLightweight at 0.2 pounds for easy single-hand use during inspection\u003c\/li\u003e\n  \u003cli\u003eNo readout instrument required — provides immediate pass\/fail result\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 inside diameter inspection of holes and bores machined to a nominal diameter of 0.689 inches.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlug gages are handled and used by quality control technicians and machinists — no power source or calibration instrument is required during normal use. Store the gage in a protective case away from temperature extremes to maintain dimensional stability. Handle with clean, dry hands or inspection gloves to prevent corrosion from skin oils. Verify the gage against a certified master ring gage or calibration standard at regular intervals per your facility quality plan.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement Diameter\u003c\/strong\u003e: 0.689 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: 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: 29-689-7\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51710819828018,"sku":"29-689-7","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e79089a32e3bf5ec41dac39000c00e82.jpg?v=1788470986","url":"https:\/\/voomisupply.com\/products\/spi-29-689-7-class-zz-plus-plug-gage-0-689-in","provider":"Voomi Supply","version":"1.0","type":"link"}