{"product_id":"spi-34-418-4-plug-thread-gage-3-4-10-3b-double-end","title":"Spi 34-418-4 Plug Thread Gage 3\/4-10 3B Double End","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SPI 34-418-4 is a double-end plug thread gage used to verify the acceptance of internal 3\/4-10 UNC threads to 3B tolerance class. One end carries the Go member; the opposite end carries the No Go member. Both ends must be applied during inspection: the Go end must pass fully through a conforming thread, and the No Go end must not enter. This gage is made from steel and ships with a size-3 handle already included. It is the standard tool used by machinists, quality inspectors, and manufacturing technicians to confirm threaded holes meet dimensional requirements before parts advance in production.\u003c\/p\u003e\n\u003cp\u003eThis gage is suited for inspecting 3\/4-10 UNC internal threads in machined components across general manufacturing, maintenance, and fabrication environments. The 3B classification applies to general-purpose internal threads requiring a standard fit. A traceable NIST calibration certification is included, making this gage appropriate for use in quality systems that require documented traceability to national standards. Both production floor inspection and incoming material verification are common applications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eDouble-end design combines Go and No Go gaging members in a single tool\u003c\/li\u003e\n  \u003cli\u003eCalibrated to 3B tolerance class for 3\/4-10 UNC internal threads\u003c\/li\u003e\n  \u003cli\u003eSteel construction for durability and dimensional stability\u003c\/li\u003e\n  \u003cli\u003eSize-3 handle included — no separate handle purchase required\u003c\/li\u003e\n  \u003cli\u003eNIST traceability certification included for quality-system compliance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for inspection of 3\/4-10 UNC internal threads conforming to 3B tolerance class in machined parts and assemblies.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThread gages are inspection instruments, not cutting tools — never force the Go member through a thread or apply torque with a wrench. Apply the Go end by hand with light, even pressure; reject any part the Go end will not pass through completely. The No Go end should not enter the thread; if it does, the part is out of tolerance. Store gages in a protective case away from cutting fluids, abrasives, and temperature extremes to maintain calibration integrity.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/4-10\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance Class\u003c\/strong\u003e: 3B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGage Type\u003c\/strong\u003e: Go \/ No Go\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Configuration\u003c\/strong\u003e: Double End\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHandle Size\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHandle Included\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTraceability Standard\u003c\/strong\u003e: NIST\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\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: 34-418-4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51713935606066,"sku":"34-418-4","price":250.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fddce86fcd095e04f5e9702146d7727c.jpg?v=1788495668","url":"https:\/\/voomisupply.com\/products\/spi-34-418-4-plug-thread-gage-3-4-10-3b-double-end","provider":"Voomi Supply","version":"1.0","type":"link"}