{"product_id":"spi-29-138-5-class-zz-plus-plug-gage-0-138-in","title":"Spi 29-138-5 Class Zz Plus Plug Gage 0.138 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 29-138-5 is a Class ZZ Plus plug gage designed for precision go\/no-go measurement of small bores and holes at 0.138 inches in diameter. Built from steel, this gage delivers a tolerance of 0.0002 inches, making it suitable for inspection and quality control tasks where tight dimensional verification is required. Machinists, tool-and-die technicians, and quality control professionals use Class ZZ plug gages during incoming inspection, in-process checks, and final part verification on the shop floor or in the inspection room.\u003c\/p\u003e\n\u003cp\u003eThis gage is used wherever a 0.138-inch bore or drilled hole must be confirmed to print dimensions. Typical applications include inspection of precision-machined components in manufacturing environments. It is well suited for use in machine shops, production facilities, and inspection departments working with tight-tolerance parts where a reliable, handheld go\/no-go check is needed.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eClass ZZ Plus tolerance rating for precise go\/no-go bore inspection\u003c\/li\u003e\n  \u003cli\u003e0.138-inch measurement diameter with a 0.0002-inch tolerance\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability in shop and inspection environments\u003c\/li\u003e\n  \u003cli\u003eCompact, lightweight design at 0.2 pounds for easy handheld use\u003c\/li\u003e\n  \u003cli\u003eSingle-piece package quantity for individual replacement or addition to a gage set\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style plug gage for verifying 0.138-inch diameter bores in precision-machined parts across general manufacturing and inspection applications.\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 installation in a system is required. Before use, ensure the gage and the workpiece bore are clean and free of chips, coolant, or debris. Do not force the gage into a bore; apply light, consistent hand pressure only to avoid damage to the gage or part surface. Store in a protective case away from temperature extremes to maintain dimensional accuracy.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement Diameter\u003c\/strong\u003e: 0.138 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance\u003c\/strong\u003e: 0.0002 inches (0.0002 mm)\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\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: 29-138-5\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51717031166258,"sku":"29-138-5","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/707f9b5c201d6c9934ef00d57acefc34.jpg?v=1788534837","url":"https:\/\/voomisupply.com\/products\/spi-29-138-5-class-zz-plus-plug-gage-0-138-in","provider":"Voomi Supply","version":"1.0","type":"link"}