{"product_id":"spi-29-351-4-class-zz-plus-plug-gage-0-351-in","title":"Spi 29-351-4 Class Zz Plus Plug Gage 0.351 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 29-351-4 is a Class ZZ Plus plug gage designed for go\/no-go dimensional inspection of bored, drilled, or reamed holes. It measures a nominal diameter of 0.351 inches with a tolerance of 0.0002 inches, making it suitable for quality control applications where close-tolerance verification is required. Constructed from steel for durability and dimensional stability, this gage is a standard tool in machine shops, manufacturing floors, and production inspection stations where repeatable, accurate hole measurement is essential.\u003c\/p\u003e\n\u003cp\u003eThis plug gage is used in precision machining and fabrication environments to verify hole diameters to close tolerances. Class ZZ Plus gages are typically applied in less critical inspection tasks compared to Class Z or ZZ, but still deliver reliable dimensional verification for production-level quality checks. Machinists, quality control inspectors, and toolroom technicians use this type of gage as part of standard incoming or in-process inspection workflows.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eNominal measurement diameter of 0.351 inches for precise hole verification\u003c\/li\u003e\n  \u003cli\u003eTolerance of 0.0002 inches for reliable close-tolerance inspection\u003c\/li\u003e\n  \u003cli\u003eSteel construction for wear resistance and long service life\u003c\/li\u003e\n  \u003cli\u003eClass ZZ Plus designation suitable for production and general inspection use\u003c\/li\u003e\n  \u003cli\u003eCompact and lightweight at 0.2 pounds for easy handling at the inspection station\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-use plug gage for any application requiring go\/no-go inspection of 0.351-inch nominal diameter holes in production or toolroom environments.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlug gages should be handled by qualified machinists or quality control technicians familiar with gage use and care procedures. Before use, clean the gage and the hole being inspected to remove debris, oil, or burrs that could affect measurement accuracy. Do not force the gage into a hole; apply only light, consistent hand pressure to avoid gage wear or damage. Store gages in a protective case away from temperature extremes to maintain dimensional stability.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement Diameter\u003c\/strong\u003e: 0.351 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance\u003c\/strong\u003e: 0.0002 inches\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: 29-351-4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51698939494706,"sku":"29-351-4","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/68e84629bdb8c04f93890ce86d7e357e.jpg?v=1788370096","url":"https:\/\/voomisupply.com\/products\/spi-29-351-4-class-zz-plus-plug-gage-0-351-in","provider":"Voomi Supply","version":"1.0","type":"link"}