{"product_id":"osg-1405008008-thread-forming-tap-1-4-28-unf-ticn-coated","title":"Osg 1405008008 Thread Forming Tap 1\/4-28 Unf Ticn Coated","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1405008008 is a thread forming tap in the EXOTAP NRT Series designed for cold-forming internal threads in ductile metals without cutting or producing chips. Built from powdered metal high-speed steel and coated with TiCN for improved wear resistance and lubricity, this tap is engineered for demanding production and maintenance threading applications. It carries a 1\/4-28 UNF thread specification with a modified bottoming chamfer of 2 to 2.5 threads, allowing it to thread close to the bottom of a blind hole. The H4 thread limit provides a controlled fit class suitable for close-tolerance fastener applications. Overall length is 2.5 inches with a thread length of 0.5945 inches and a tapping depth of 0.9960 inches.\u003c\/p\u003e\u003cp\u003eThis tap is suited for blind hole threading operations across a range of ferrous and non-ferrous materials including alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum. It is commonly used in machining centers, CNC tapping operations, and manual tap work where chip evacuation is a concern or where thread strength requirements favor a formed thread over a cut thread. The right-hand thread direction matches standard UNF fastener orientation. Machinists, tool-and-die makers, and maintenance technicians working in manufacturing, aerospace, and general industrial environments will find this tap appropriate for precision blind hole work.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eThread forming design eliminates chips, reducing risk of chip packing in blind holes\u003c\/li\u003e\n\u003cli\u003ePowdered metal high-speed steel construction provides uniform carbide distribution for extended tool life\u003c\/li\u003e\n\u003cli\u003eTiCN coating (finish code V) improves surface hardness and reduces friction during tapping\u003c\/li\u003e\n\u003cli\u003eModified bottoming chamfer (2 to 2.5P) enables threading close to blind hole bottom\u003c\/li\u003e\n\u003cli\u003eH4 thread limit for controlled, close-tolerance UNF thread fitment\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction, compatible with standard 1\/4-28 UNF fastener systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for 1\/4-28 UNF blind hole threading applications in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces. Material application codes P, M, and N apply.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThread forming taps require adequate lubrication or cutting fluid matched to the workpiece material to prevent galling, particularly in stainless steel and hardened steel. Ensure the tap driver and machine spindle are properly aligned before tapping to avoid tap breakage. Power down or de-energize any machine tool before changing taps or adjusting tooling. Use a tap holder with appropriate torque limiting to avoid over-torque in harder materials.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-28 UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\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\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 28\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.5945 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 0.9960 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2550 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.1910 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: Powdered Metal High-Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN (Finish Code V)\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: EXOTAP NRT (Series 14050)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.033 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: 1405008008\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51753146155314,"sku":"1405008008","price":80.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/219f7caf0165a9628c75181e385a2c0c_e46235ee-47fc-4f5d-8477-19ce0b6de04d.jpg?v=1788933249","url":"https:\/\/voomisupply.com\/products\/osg-1405008008-thread-forming-tap-1-4-28-unf-ticn-coated","provider":"Voomi Supply","version":"1.0","type":"link"}