{"product_id":"osg-1400137405-thread-forming-tap-3-8-24-unf-cobalt-tin","title":"Osg 1400137405 Thread Forming Tap 3\/8-24 Unf Cobalt Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1400137405 is a thread forming tap designed for producing internal threads without cutting, using material displacement instead of chip removal. Sized for 3\/8-24 UNF threads, this tap features a modified bottoming chamfer with 2 to 2.5 chamfered threads, making it well suited for blind hole applications where thread depth close to the bottom of a hole is required. Manufactured from cobalt high-speed steel and coated with TiN (titanium nitride), it delivers improved hardness and wear resistance across a range of workpiece materials. It carries a Class 3B fit and H5 thread limit for close-tolerance threading work. Right-hand thread direction. Part of the OSG HY-PRO NRT series.\u003c\/p\u003e\n\u003cp\u003eThis tap is intended for blind hole threading operations in machining environments. It performs across a broad range of materials including alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum. The modified bottoming chamfer allows threads to be formed closer to the bottom of a blind hole than a standard plug or taper tap, reducing the need for additional operations. Typical applications include precision machined components in industrial manufacturing, automotive, and tooling fabrication contexts where tight thread tolerances are required.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eThread forming (chipless) design eliminates chip buildup in blind holes\u003c\/li\u003e\n  \u003cli\u003eModified bottoming chamfer (2 to 2.5 chamfered threads) for near-bottom thread depth in blind holes\u003c\/li\u003e\n  \u003cli\u003eCobalt construction provides elevated heat and wear resistance compared to standard HSS\u003c\/li\u003e\n  \u003cli\u003eTiN coating extends tool life and reduces friction during tapping\u003c\/li\u003e\n  \u003cli\u003eH5 thread limit and Class 3B fit for close-tolerance threading\u003c\/li\u003e\n  \u003cli\u003eCompatible with alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for blind hole threading in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces. Produces 3\/8-24 UNF internal threads to Class 3B fit. Part of the OSG HY-PRO NRT series (Series 14001).\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or toolroom technicians using a tapping machine, CNC machining center, or hand tap wrench with appropriate tap holder. Ensure the pilot hole diameter is correctly sized for thread forming taps, which require a larger pilot hole than cutting taps for the same thread size. Coolant through is not available on this tap; apply cutting fluid externally as required by the workpiece material. Secure the workpiece fully before operation and verify spindle alignment to avoid tap breakage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-24\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 24\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Modified Bottoming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfered Threads\u003c\/strong\u003e: 2 to 2.5P\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 3B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Blind Hole Threading\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Alloy Steel, Aluminum, Carbon Steel, Die Steel, Hardened Steel, Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.938 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.752 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 1.252 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.381 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.286 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.4375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.145 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HY-PRO NRT (14001)\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: OSG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1400137405\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51730789237042,"sku":"1400137405","price":56.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f9e0a7535aeb52c331c9ab34d6077839_cf4f55f6-c026-4bb1-8494-6292be54f313.jpg?v=1788722878","url":"https:\/\/voomisupply.com\/products\/osg-1400137405-thread-forming-tap-3-8-24-unf-cobalt-tin","provider":"Voomi Supply","version":"1.0","type":"link"}