{"product_id":"osg-1400125601-thread-forming-tap-1-4-20-unc-bottoming-cobalt","title":"Osg 1400125601 Thread Forming Tap 1\/4-20 Unc Bottoming Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1400125601 is a thread forming tap designed for cold-forming internal threads without cutting — displacing material rather than removing chips. Built from cobalt high-speed steel with a steam oxide finish, this bottoming-chamfer tap is suited for blind-hole threading operations where the formed thread must extend close to the bottom of the bore. The H5 thread limit provides a controlled fit tolerance for 1\/4-20 UNC threads. With an overall length of 2.5 inches and a thread length of 0.594 inches, this tap fits standard tapping chucks and holders used in machine shop and field tapping setups. It is part of the HY-PRO NRT series from OSG.\u003c\/p\u003e\n\u003cp\u003eThis tap is designed for blind-hole threading applications across a broad range of materials including alloy steel, carbon steel, die steel, hardened steel, aluminum, and stainless steel — reflecting material application codes P and N. The bottoming chamfer of 1 to 1.5 threads makes it the right choice when thread runout must be minimized and full-depth engagement near the bottom of the hole is required. Typical users include machinists, tool and die makers, maintenance technicians, and production threading operations where chip-free forming is preferred over cutting taps.\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\u003eCobalt high-speed steel construction provides heat and wear resistance in tough materials\u003c\/li\u003e\n  \u003cli\u003eSteam oxide coating improves lubricity and reduces galling during tapping\u003c\/li\u003e\n  \u003cli\u003eBottoming chamfer (1 to 1.5 threads) maximizes usable thread depth in blind holes\u003c\/li\u003e\n  \u003cli\u003eH5 thread limit for consistent fit tolerance on 1\/4-20 UNC threads\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread direction; compatible with standard tapping attachments and CNC spindles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for 1\/4-20 UNC blind-hole threading in alloy steel, carbon steel, die steel, hardened steel, aluminum, and stainless steel. Part of the OSG HY-PRO NRT series, Series 14001. Shank diameter of 0.255 inches fits standard 1\/4-inch tapping chucks and holders.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThread forming taps require proper lubrication and are typically run at lower spindle speeds than cutting taps — consult OSG published speed and feed data for the specific work material before use. Ensure the correct drill size for thread forming (larger than a cut-tap drill) is used to prepare the hole; using an undersized drill will overload the tap. Power down and lock out any machine before manually loading or unloading the tap from a holder. For hardened steel applications, verify the workpiece hardness is within the tap's rated material application range before proceeding.\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\u003eChamfer\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 Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H5\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\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\u003eTapping Depth\u003c\/strong\u003e: 0.933 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\/Finish\u003c\/strong\u003e: Steam Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Blind Hole Threading\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\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 (Series 14001)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.043 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: 1400125601\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51733219410226,"sku":"1400125601","price":30.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/46e5ca79da0c305dc6b32bcb9e02926d.jpg?v=1788752897","url":"https:\/\/voomisupply.com\/products\/osg-1400125601-thread-forming-tap-1-4-20-unc-bottoming-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}