{"product_id":"spi-23-173-8-threaded-ring-gage-7-16-28-class-2a-go-no-go","title":"Spi 23-173-8 Threaded Ring Gage 7\/16-28 Class 2A Go No Go","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SPI 23-173-8 is a double-ring threaded ring gage used to inspect external threads to the 7\/16-28 thread specification at Class 2A tolerance. It includes both a Go ring and a No Go ring in a single double-ring configuration, allowing technicians to confirm both the maximum material condition and the minimum thread acceptance boundary without switching tools. Made from tool steel and supplied with NIST traceability certification, this gage is suited for production floor inspection, incoming quality control, and precision machining verification. Machinists, QC inspectors, and toolroom technicians are the primary users of this type of gage.\u003c\/p\u003e\u003cp\u003eThis gage is applied wherever 7\/16-28 externally threaded components must be verified for dimensional conformance prior to assembly or shipment. The 7\/16-28 designation refers to a 7\/16-inch nominal diameter with 28 threads per inch, a fine-pitch thread used in precision mechanical and instrument applications. The Class 2A classification corresponds to standard tolerance limits for general-purpose external threads as defined under ASME B1.2. Both Go and No Go members are contained in the double-ring body, making it efficient for high-volume thread inspection workflows.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDouble-ring design includes both Go and No Go members in one unit for streamlined inspection\u003c\/li\u003e\n\u003cli\u003eCovers 7\/16-28 thread size at Class 2A external thread tolerance\u003c\/li\u003e\n\u003cli\u003eConstructed from tool steel for durability and wear resistance in production environments\u003c\/li\u003e\n\u003cli\u003eNIST traceability certification included, supporting quality system documentation requirements\u003c\/li\u003e\n\u003cli\u003eCompact form factor suitable for bench use or in-line inspection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for inspection of external threads conforming to the 7\/16-28 thread form at Class 2A tolerance limits per ASME B1.2 standards.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThreaded ring gages are used by machinists and quality control inspectors and require no installation in the traditional sense. Before use, ensure the gage and the part being inspected are at the same ambient temperature to avoid thermal expansion error. Apply light thread-cutting oil or gage oil when gaging to reduce wear on the gage rings. Store the gage in its case when not in use and have it recalibrated periodically per your quality system requirements to maintain NIST traceability.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 7\/16-28\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClassification\u003c\/strong\u003e: Class 2A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGage Type\u003c\/strong\u003e: Go and No Go\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Configuration\u003c\/strong\u003e: Double Ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Tool Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: NIST\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTraceability Certification\u003c\/strong\u003e: NIST Included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 1.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 0.45 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.618 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 23-173-8\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51689175056690,"sku":"23-173-8","price":410.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2e03ad8d660ae3d88da7db353f193cef.jpg?v=1788255603","url":"https:\/\/voomisupply.com\/products\/spi-23-173-8-threaded-ring-gage-7-16-28-class-2a-go-no-go","provider":"Voomi Supply","version":"1.0","type":"link"}