{"product_id":"spi-37-179-9-double-end-plug-thread-gage-m1-8x0-35","title":"Spi 37-179-9 Double End Plug Thread Gage M1.8x0.35","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SPI 37-179-9 is a double-end plug thread gage used to verify internal thread conformance to M1.8x0.35 metric specifications at 6H tolerance class. One end carries the Go member to confirm minimum material condition; the opposite end carries the No Go member to detect oversize threads. Both members are housed in a single included handle, allowing quick field or bench inspection without swapping tools. A traceability certification traceable to NIST and compliant with ANSI standards ships with the gage, supporting documented quality programs. This tool is used by machinists, quality technicians, and precision metrology professionals wherever small-diameter metric thread verification is required.\u003c\/p\u003e\u003cp\u003eThis gage is suited for inspecting tapped holes in precision components where M1.8x0.35 internal threads must meet 6H class tolerances. Typical applications include small fastener bores in electronic housings, medical device components, optical assemblies, and other applications requiring close-tolerance metric threads. Its compact double-end configuration keeps inspection efficient on the bench or at the point of manufacture.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDouble-end design with Go and No Go members on a single handle for efficient thread verification\u003c\/li\u003e\n\u003cli\u003eM1.8x0.35 metric thread specification at 6H tolerance class\u003c\/li\u003e\n\u003cli\u003eHandle included — no separate handle purchase required\u003c\/li\u003e\n\u003cli\u003eNIST-traceable, ANSI-compliant traceability certification included for quality documentation\u003c\/li\u003e\n\u003cli\u003eCompact size supports use in tight workspaces and small-component inspection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for inspection of M1.8x0.35 internal threads to 6H class tolerance. Verify thread form and dimensional requirements against applicable ANSI and ASME B1 metric thread standards before use in a specific application.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThread gages are inspection instruments, not cutting tools — do not force the Go member or use it to drive or form threads. Handle and store the gage to prevent contact damage to the precision ground members. Follow your facility calibration schedule and retain the included NIST-traceable certificate in your calibration records. Periodic recertification against a reference standard is recommended to maintain measurement integrity.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: M1.8x0.35\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTolerance Class\u003c\/strong\u003e: 6H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGage Type\u003c\/strong\u003e: Double End Plug Gage (Go \/ No Go)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandle Included\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTraceability Certification\u003c\/strong\u003e: ANSI \/ NIST\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 2.43 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 0.31 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 0.31 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.066 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: 37-179-9\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SPIROTHERM","offers":[{"title":"Default Title","offer_id":51723435868466,"sku":"37-179-9","price":491.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/91c6f389bd6bcf438c301a74b0646954.jpg?v=1788604850","url":"https:\/\/voomisupply.com\/products\/spi-37-179-9-double-end-plug-thread-gage-m1-8x0-35","provider":"Voomi Supply","version":"1.0","type":"link"}