{"product_id":"spi-29-054-4-class-zz-plus-plug-gage-0-054-in","title":"Spi 29-054-4 Class Zz Plus Plug Gage 0.054 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 29-054-4 is a Class ZZ Plus plug gage machined from steel and used to verify bore and hole diameters to a nominal size of 0.054 inches. It holds a tolerance of 0.0002 inches, making it suited for inspection of precision-machined components where tight dimensional control is required. Class ZZ Plus designates a tolerance grade appropriate for general-purpose production inspection. Machinists, tool-and-die makers, and quality-control technicians use plug gages like this one to confirm whether a drilled, reamed, or bored hole falls within specified dimensional limits.\u003c\/p\u003e\n\u003cp\u003eThis gage is applied in machine shops, manufacturing facilities, and precision fabrication environments where small-diameter bore inspection is part of routine quality assurance. Its compact size and steel construction make it practical for bench inspection and inline production checks. The 0.054-inch nominal diameter targets fine bores typical in hydraulic fittings, instrument components, and close-tolerance mechanical assemblies. Individual unit packaging suits single-station inspection setups.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNominal diameter of 0.054 inches for small-bore inspection\u003c\/li\u003e\n  \u003cli\u003eClass ZZ Plus tolerance grade at 0.0002 inches for production-level accuracy\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability and dimensional stability\u003c\/li\u003e\n  \u003cli\u003eSingle-piece unit suitable for bench or inline inspection use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose plug gage for verifying small bores and drilled holes at a nominal diameter of 0.054 inches in standard production inspection applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlug gages are handled and used by machinists and quality-control inspectors. Before use, clean the gage and the bore being checked to remove chips, coolant, and debris that could affect measurement. Apply light gaging force only — never force a plug gage into a hole. Store the gage in its protective case when not in use to prevent surface damage that would affect accuracy.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Diameter\u003c\/strong\u003e: 0.054 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance\u003c\/strong\u003e: 0.0002 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance (mm)\u003c\/strong\u003e: 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: 29-054-4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51699074007346,"sku":"29-054-4","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2a4e91b38630317cacb5f75a2ea5bc11.jpg?v=1788371964","url":"https:\/\/voomisupply.com\/products\/spi-29-054-4-class-zz-plus-plug-gage-0-054-in","provider":"Voomi Supply","version":"1.0","type":"link"}