{"product_id":"spi-29-040-3-class-zz-plus-plug-gage-0-04-inch","title":"Spi 29-040-3 Class Zz Plus Plug Gage 0.04 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 29-040-3 is a Class ZZ Plus plug gage designed for precision inspection of small-diameter holes and bores. Built from steel, this go\/no-go style gage measures hole diameters at 0.04 inches with a tolerance of 0.0002 inches, making it suitable for applications where tight dimensional control is required. It is used primarily by machinists, quality control inspectors, and tool-and-die professionals working in manufacturing, aerospace, and general metalworking environments where hole conformance must be verified to print specifications.\u003c\/p\u003e\n\u003cp\u003eThis plug gage is suited for inspecting drilled, reamed, or machined holes at the 0.04-inch nominal diameter. Class ZZ Plus gages occupy a step above standard Class ZZ tolerances, providing tighter gage accuracy for production inspection where measurement uncertainty must be minimized. Typical applications include incoming inspection, in-process quality checks, and final part verification on machined components.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eClass ZZ Plus tolerance class for tighter inspection accuracy than standard Class ZZ\u003c\/li\u003e\n  \u003cli\u003e0.04-inch nominal measurement diameter for small-bore inspection\u003c\/li\u003e\n  \u003cli\u003e0.0002-inch tolerance for precise dimensional verification\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability and wear resistance in shop environments\u003c\/li\u003e\n  \u003cli\u003eCompact single-piece form factor suited for bench inspection or floor use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a direct-use plug gage for inspecting machined holes at 0.04-inch nominal diameter in accordance with Class ZZ Plus gage standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlug gages are handled and used by quality control technicians or machinists — no power source or mechanical installation is required. Keep the gage surface clean and lightly oiled when not in use to prevent corrosion. Do not force the gage into a bore; improper force can damage both the gage and the workpiece. Store in a protective case away from abrasive materials to maintain calibration integrity.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement Diameter\u003c\/strong\u003e: 0.04 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 (Metric)\u003c\/strong\u003e: 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\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: 29-040-3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51711305646386,"sku":"29-040-3","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5f9fb35e7bb907e42113f2191bcd5916.jpg?v=1788475506","url":"https:\/\/voomisupply.com\/products\/spi-29-040-3-class-zz-plus-plug-gage-0-04-inch","provider":"Voomi Supply","version":"1.0","type":"link"}