{"product_id":"spi-19-555-2-class-zz-minus-plug-pin-gage-0-555-in","title":"Spi 19-555-2 Class Zz Minus Plug Pin Gage 0.555 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 19-555-2 is a Class ZZ minus plug pin gage designed for go\/no-go dimensional inspection of machined bores and holes. Sized at 0.555 inches in diameter with a minus tolerance of 0.0002 inches, this gage checks that an interior feature meets its minimum acceptable size. Constructed from steel for wear resistance and dimensional stability, it is a standard tool in quality control and machine shop inspection workflows. Metrology technicians, machinists, and QC inspectors use this type of gage for high-repetition functional inspection tasks.\u003c\/p\u003e\n\u003cp\u003eClass ZZ plug gages are the most widely used grade for general-purpose shop-floor inspection. This gage is suited for checking drilled, reamed, or bored holes in production and job-shop environments where consistent go\/no-go verification is required. The minus designation means the gage is manufactured undersized relative to the nominal diameter, making it appropriate for use as a go member in a plug gage set or as a standalone minus-tolerance reference gage.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eClass ZZ tolerance grade for general-purpose shop and production inspection\u003c\/li\u003e\n  \u003cli\u003eMinus plug configuration with 0.0002 inch tolerance for precise undersized verification\u003c\/li\u003e\n  \u003cli\u003e0.555 inch nominal diameter for direct bore and hole inspection\u003c\/li\u003e\n  \u003cli\u003eSteel construction provides durability and dimensional stability under repeated use\u003c\/li\u003e\n  \u003cli\u003eCompact and lightweight at 0.2 pounds for easy single-hand operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard Class ZZ minus plug pin gage for use in general machining and quality control inspection applications requiring 0.555 inch bore verification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003ePlug pin gages should be handled and stored carefully to prevent damage to the precision ground surface. Before use, clean the gage and the bore being checked with a lint-free cloth to remove chips, coolant, or debris that could affect the reading. Do not force the gage into a hole; apply light, consistent hand pressure only. Periodic recalibration against a certified master is recommended to confirm gage integrity over time.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Diameter\u003c\/strong\u003e: 0.555 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance Class\u003c\/strong\u003e: Class ZZ Minus\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance (Decimal Inch)\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\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: 19-555-2\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51721744318770,"sku":"19-555-2","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8d066f57e403d43552226d3d442256e5.jpg?v=1788580203","url":"https:\/\/voomisupply.com\/products\/spi-19-555-2-class-zz-minus-plug-pin-gage-0-555-in","provider":"Voomi Supply","version":"1.0","type":"link"}