{"product_id":"spi-29-294-6-class-zz-plus-plug-gage-0-294-in-dia","title":"Spi 29-294-6 Class Zz Plus Plug Gage 0.294 in Dia","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 29-294-6 is a Class ZZ Plus plug gage designed to verify the diameter of machined holes and bores to a high degree of precision. This go\/no-go style inspection tool checks whether a hole falls within an acceptable tolerance range, making it a standard instrument in quality control and machining environments. Manufactured from steel, the 29-294-6 measures a nominal diameter of 0.294 inches and holds a tolerance of 0.0002 inches, ensuring consistent and repeatable measurement results. Machinists, quality technicians, and tool room professionals use plug gages like this one during in-process and final inspection of drilled, reamed, or bored holes.\u003c\/p\u003e\n\u003cp\u003eThis gage is suited for inspection applications in precision machining, tool and die, and manufacturing quality control environments. The 0.294-inch nominal size makes it appropriate for checking holes in metal components where tight dimensional control is required. It is a single-unit item packaged individually and is intended for bench use or integration into a standard gage set workflow. Both job shop and production floor environments commonly rely on Class ZZ Plus plug gages for final acceptance inspection.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNominal measurement diameter of 0.294 inches for precise hole inspection\u003c\/li\u003e\n  \u003cli\u003eClass ZZ Plus tolerance of 0.0002 inches for high-accuracy go\/no-go gauging\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability and dimensional stability under shop conditions\u003c\/li\u003e\n  \u003cli\u003eCompact and lightweight at 0.2 pounds for easy single-handed use\u003c\/li\u003e\n  \u003cli\u003eIndividual packaging suitable for adding to an existing gage set or tool crib\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style inspection gage for use in standard plug gage handle sets and holders compatible with the 0.294-inch nominal diameter range.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlug gages should be handled with clean, dry gloves or a gage cloth to prevent thermal expansion from hand heat, which can affect measurement accuracy. Before use, verify that the gage and workpiece are at a stable ambient temperature, typically 68 degrees F per standard metrology practice. Do not force the gage into a hole; apply light, consistent hand pressure only. Store the gage in a protective case away from abrasive materials to maintain the lapped surface finish and dimensional integrity.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Diameter\u003c\/strong\u003e: 0.294 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\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: 29-294-6\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51708870295858,"sku":"29-294-6","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b4526936fbc2797f5bafbf16f952999b.jpg?v=1788448814","url":"https:\/\/voomisupply.com\/products\/spi-29-294-6-class-zz-plus-plug-gage-0-294-in-dia","provider":"Voomi Supply","version":"1.0","type":"link"}