{"product_id":"osg-1400135108-thread-forming-tap-3-8-16-unc-cobalt-ticn","title":"Osg 1400135108 Thread Forming Tap 3\/8-16 Unc Cobalt Ticn","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1400135108 is a thread forming tap in the HY-PRO NRT series, designed for cold-forming internal threads in ductile materials without cutting or producing chips. Sized at 3\/8-16 UNC with a Modified Bottoming chamfer of 2 to 2.5 chamfered threads, this tap is manufactured from cobalt high-speed steel and finished with a TiCN coating for increased surface hardness and heat resistance. The right-hand thread geometry conforms to a Class 3B fit at an H5 thread limit, delivering tight, consistent threads suited for precision assemblies. Machinists and tooling specialists install this tap in CNC machining centers and tapping machines.\u003c\/p\u003e\n\u003cp\u003eThis tap is intended for blind hole threading applications across a range of materials including alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel. The Modified Bottoming chamfer allows threading close to the bottom of blind holes, making it practical for applications where thread depth and clearance are tightly constrained. The TiCN coating extends tool life in abrasive and high-strength materials. It suits production environments in aerospace, automotive, industrial fabrication, and general machining where thread quality and repeatability are critical.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eThread forming (chipless) design eliminates chip evacuation concerns in blind holes\u003c\/li\u003e\n  \u003cli\u003eCobalt high-speed steel construction for improved red hardness and wear resistance\u003c\/li\u003e\n  \u003cli\u003eTiCN coating increases surface hardness and reduces friction during forming\u003c\/li\u003e\n  \u003cli\u003eModified Bottoming chamfer (2 to 2.5 threads) enables threading close to the bottom of blind holes\u003c\/li\u003e\n  \u003cli\u003eClass 3B fit at H5 thread limit for precise, tight-tolerance threads\u003c\/li\u003e\n  \u003cli\u003eRight-hand, 3\/8-16 UNC thread form compatible with standard inch fastener applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eRated for use in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel (Material Application Codes P and N). Designed for blind hole threading operations on tapping machines and CNC machining centers using standard 3\/8-inch tap holders.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThread forming taps require a properly sized forming tap drill — standard twist drill charts do not apply; consult the tap manufacturer's forming tap drill size recommendations for 3\/8-16 UNC. Adequate lubrication or cutting fluid is critical for tool life, particularly in steel and stainless steel; verify fluid compatibility with TiCN-coated tooling. Confirm spindle speed and feed rate are set per the material being tapped, as thread forming generates higher torque than cutting taps. No coolant-through capability on this tool; external flood or brush lubrication is required.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-16 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 16\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\u003eChamfer\u003c\/strong\u003e: Modified Bottoming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfered Threads\u003c\/strong\u003e: 2 to 2.5 threads\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Blind Hole Threading\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Cobalt High-Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\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\u003eWeight\u003c\/strong\u003e: 0.079 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HY-PRO NRT\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: 1400135108\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51738710966578,"sku":"1400135108","price":56.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/184fb23634a8d8974763fed8f9f8ade5.jpg?v=1788803211","url":"https:\/\/voomisupply.com\/products\/osg-1400135108-thread-forming-tap-3-8-16-unc-cobalt-ticn","provider":"Voomi Supply","version":"1.0","type":"link"}