{"product_id":"osg-1400126208-thread-forming-tap-1-4-20-unc-cobalt-ticn","title":"Osg 1400126208 Thread Forming Tap 1\/4-20 Unc Cobalt Ticn","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1400126208 is a thread forming tap in the HY-PRO NRT series, designed for cold-forming internal threads without cutting chips. Built from cobalt high-speed steel and coated with titanium carbonitride (TiCN), it handles tough materials where standard HSS taps wear prematurely. The 1\/4-20 UNC thread form and modified bottoming chamfer allow threading close to the bottom of blind holes. At 2.5 inches overall length with a 0.594-inch thread length and H4 thread limit, this tap suits precision applications where dimensional consistency across batches is critical. Licensed HVAC, plumbing, and mechanical trades use thread forming taps when working with ductile metals where chip evacuation in blind holes is a concern.\u003c\/p\u003e\u003cp\u003eThis tap is suited for blind hole threading in residential and commercial maintenance, fabrication, and repair settings. It performs in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel. The modified bottoming chamfer with 2 to 2.5 chamfered threads provides good thread engagement close to the blind hole floor, making it a practical choice when thread depth is constrained by component design. It is used by machinists, maintenance mechanics, and field technicians working with threaded fastener repairs or custom component fabrication.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eThread forming (chipless) design eliminates chip evacuation issues in blind holes\u003c\/li\u003e\n\u003cli\u003eCobalt HSS construction provides elevated heat and wear resistance over standard M2 HSS\u003c\/li\u003e\n\u003cli\u003eTiCN coating reduces friction and extends service life in abrasive and hard materials\u003c\/li\u003e\n\u003cli\u003eModified bottoming chamfer (2 to 2.5P) enables threading near the bottom of blind holes\u003c\/li\u003e\n\u003cli\u003eH4 thread limit ensures consistent fit and gauge compliance across production runs\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction, compatible with standard tapping equipment and hand tools\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in blind hole threading applications across alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces requiring a 1\/4-20 UNC internal thread.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThread forming taps require adequate lubrication or cutting fluid matched to the workpiece material — use appropriate tapping fluid for steel or aluminum before starting. Secure the workpiece fully before tapping and use a calibrated torque handle or tapping head to avoid overload and breakage. Ensure the tap is aligned perpendicular to the workpiece surface to maintain thread straightness. Inspect the H4 thread limit with a go\/no-go gauge after tapping to confirm dimensional compliance.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-20 UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\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\u003eThreads per Inch\u003c\/strong\u003e: 20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.594 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 0.933 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.255 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.191 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.3125 inches\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\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\u003eSeries\u003c\/strong\u003e: HY-PRO NRT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.035 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 1400126208\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51734737518898,"sku":"1400126208","price":38.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f9e0a7535aeb52c331c9ab34d6077839_a5a8876f-1eea-4acf-8786-129e28af122e.jpg?v=1788766371","url":"https:\/\/voomisupply.com\/products\/osg-1400126208-thread-forming-tap-1-4-20-unc-cobalt-ticn","provider":"Voomi Supply","version":"1.0","type":"link"}