{"product_id":"spi-34-212-1-plug-thread-gage-no-go-3-56-2b-single-end","title":"Spi 34-212-1 Plug Thread Gage No Go 3-56 2B Single End","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SPI 34-212-1 is a single-end No Go plug thread gage designed to inspect and reject internal threads that fall outside the acceptable tolerance range for the 3-56 thread form. Built to 2B classification standards, this gage is used to verify that a threaded hole is not too loose or oversized after tapping. The gage body is machined from steel for durability and dimensional stability. NIST traceability is included, supporting quality-control documentation requirements in precision manufacturing and inspection environments. A size 000 handle is required for use but is not included with this gage.\u003c\/p\u003e\u003cp\u003eThis gage is suited for quality inspection applications involving miniature 3-56 unified national coarse threads commonly found in small fastener assemblies, instrumentation, and precision mechanical components. It is used by machinists, quality technicians, and inspection personnel working in production or job-shop environments where thread conformance to tolerance class 2B must be verified before parts advance to assembly. The single-end No Go design allows for fast pass-fail inspection without requiring a double-end gage setup.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNo Go single-end design for rapid rejection of out-of-tolerance internal threads\u003c\/li\u003e\n\u003cli\u003eThread size 3-56 with 2B classification for standard unified thread inspection\u003c\/li\u003e\n\u003cli\u003eSteel construction for wear resistance and long service life\u003c\/li\u003e\n\u003cli\u003eNIST-traceable calibration certification included for quality documentation\u003c\/li\u003e\n\u003cli\u003eRequires size 000 handle, sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for inspection of internal 3-56 unified thread form, 2B tolerance class. Compatible with standard plug gage handles sized for 000 series gages.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003ePlug thread gages are handled and used by quality control technicians and machinists — no power tools or utilities need to be shut down for gage use. Always store gages in a protective case away from chips, coolant, and other abrasives to preserve gage accuracy. Do not force the gage into a threaded hole; a No Go gage should not enter a conforming thread. Follow your facility calibration schedule and handle the gage only with clean, dry hands or lint-free gloves to prevent corrosion.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3-56\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClassification\u003c\/strong\u003e: 2B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGo\/No Go\u003c\/strong\u003e: No Go\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Single 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: 000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandle Included\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTraceability Certification\u003c\/strong\u003e: NIST\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 41111619\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: 34-212-1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51698502271282,"sku":"34-212-1","price":100.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/608947fd079b7f8ad20b432623c2d079.jpg?v=1788363875","url":"https:\/\/voomisupply.com\/products\/spi-34-212-1-plug-thread-gage-no-go-3-56-2b-single-end","provider":"Voomi Supply","version":"1.0","type":"link"}