{"product_id":"spi-29-021-3-class-zz-plus-plug-gage-0-021-in","title":"Spi 29-021-3 Class Zz Plus Plug Gage 0.021 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 29-021-3 is a Class ZZ Plus plug gage used to verify bore and hole diameters in precision machining and inspection work. It measures a nominal diameter of 0.021 inches with a tolerance of 0.0002 inches, making it suited for close-tolerance quality control tasks. Constructed from steel, this gage is built to withstand repeated use in shop-floor inspection environments. Machinists, tool and die makers, and quality control technicians use this type of gage to confirm whether a drilled or reamed hole falls within specified limits.\u003c\/p\u003e\n\u003cp\u003eThis gage is appropriate for use in manufacturing, tooling, and precision inspection applications where small-diameter holes must be confirmed to tight tolerances. It is typically deployed in production settings requiring go\/no-go verification at the 0.021-inch diameter range. The compact size makes it practical for bench inspection and in-process checks on machined components.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNominal measurement diameter of 0.021 inches for small-bore inspection\u003c\/li\u003e\n  \u003cli\u003eClass ZZ Plus tolerance rating of 0.0002 inches for close-tolerance verification\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability and dimensional stability\u003c\/li\u003e\n  \u003cli\u003eSingle-piece package quantity suitable for individual use or replacement\u003c\/li\u003e\n  \u003cli\u003eCompact form factor for bench and in-process inspection tasks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a Class ZZ Plus plug gage for verifying 0.021-inch nominal diameter bores in standard precision machining and inspection applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eHandle plug gages with clean, dry hands or lint-free gloves to prevent corrosion from skin oils. Store the gage in its protective case when not in use to avoid damage to the precision-ground surface. Calibration and use should follow applicable metrology standards; gages should be inspected periodically for wear that could affect accuracy. Do not force the gage into a hole, as this can damage both the gage and the workpiece.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter of Measurement\u003c\/strong\u003e: 0.021 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\u003eWeight\u003c\/strong\u003e: 0.2 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGage Class\u003c\/strong\u003e: ZZ Plus\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 29-021-3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51715058565426,"sku":"29-021-3","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e1c47d81486892530b19944da90b63c3.jpg?v=1788509388","url":"https:\/\/voomisupply.com\/products\/spi-29-021-3-class-zz-plus-plug-gage-0-021-in","provider":"Voomi Supply","version":"1.0","type":"link"}