{"product_id":"osg-1400125708-thread-forming-tap-1-4-20-unc-bottoming-ticn","title":"Osg 1400125708 Thread Forming Tap 1\/4-20 Unc Bottoming Ticn","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1400125708 is a thread forming tap in the HY-PRO NRT series, designed for cold-forming internal threads in blind holes without cutting or producing chips. Sized for 1\/4-20 UNC right-hand threads, it features a bottoming chamfer with 1 to 1.5 thread chamfer length, allowing threading close to the bottom of a blind hole. Manufactured from cobalt high-speed steel and finished with a TiCN coating, the tap delivers improved hardness and heat resistance compared to standard M2 tooling. Overall length is 2.5 inches, with a thread length of 0.594 inches and a shank diameter of 0.255 inches. The H6 thread limit provides a controlled fit tolerance suitable for general industrial fastener applications. Machinists and tool-and-die technicians use this tap in CNC tapping operations and manual tapping where chip evacuation in blind holes is a concern.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for blind hole threading in a range of metallic workpiece materials, including alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum. The thread forming process displaces material rather than cutting it, resulting in stronger thread forms with no chips to clear from the hole. It is a practical choice for production environments that require consistent thread quality in ductile and semi-ductile metals. The bottoming chamfer design makes it especially useful when thread engagement must begin very close to the bottom of a drilled hole with minimal runout distance.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/4-20 UNC right-hand thread, bottoming chamfer with 1 to 1.5 chamfered threads\u003c\/li\u003e\n  \u003cli\u003eCobalt high-speed steel construction for elevated heat and wear resistance\u003c\/li\u003e\n  \u003cli\u003eTiCN coating extends tool life in abrasive and high-hardness materials\u003c\/li\u003e\n  \u003cli\u003eThread forming design eliminates chips, ideal for blind hole applications\u003c\/li\u003e\n  \u003cli\u003eH6 thread limit for consistent, controlled thread tolerance\u003c\/li\u003e\n  \u003cli\u003eTapping depth of 0.933 inches supports deeper thread engagement in blind holes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for blind hole thread forming in alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum workpieces. Compatible with standard 1\/4-inch tap holders and CNC tapping chucks with a 0.255-inch shank diameter and 0.191-inch square drive.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThread forming taps require proper hole preparation — the pilot hole diameter for a forming tap is larger than that used for a cutting tap and must be sized to the recommended forming drill chart for 1\/4-20 UNC. Apply appropriate tapping fluid or cutting oil for the workpiece material before tapping. Ensure the tap is driven at the correct RPM and feed rate for the material and machine setup; excessive speed or misalignment can strip the formed thread or break the tap. This tap does not have coolant-through capability, so external 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: 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\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfered Threads\u003c\/strong\u003e: 1 to 1.5P\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: H6\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: 0.594 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\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: 0.025 pounds\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: 1400125708\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51748744692018,"sku":"1400125708","price":38.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d9f2260ff4a90359c5c1e8e6d3553b1b.jpg?v=1788897677","url":"https:\/\/voomisupply.com\/products\/osg-1400125708-thread-forming-tap-1-4-20-unc-bottoming-ticn","provider":"Voomi Supply","version":"1.0","type":"link"}