{"product_id":"osg-1400125701-thread-forming-tap-1-4-20-unc-bottoming-cobalt","title":"Osg 1400125701 Thread Forming Tap 1\/4-20 Unc Bottoming Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1400125701 is a thread forming tap in the HY-PRO NRT series, designed for cold-forming internal threads in ductile materials without cutting. Operating on a 1\/4-20 UNC thread specification with a bottoming chamfer of 1 to 1.5 thread pitches, it produces strong, work-hardened threads suitable for blind hole applications. Constructed from cobalt high-speed steel and finished with a steam oxide coating, the tap offers improved lubricity and corrosion resistance during tapping operations. The H6 thread limit provides consistent dimensional control for tight-tolerance assemblies. Machinists and tool-and-die professionals install this tap in CNC machines, drill presses, and tapping fixtures.\u003c\/p\u003e\n\u003cp\u003eThis tap is intended for blind hole threading in a range of ferrous and non-ferrous materials including alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum. Its thread-forming design displaces material rather than producing chips, making it well suited for applications where chip evacuation inside a blind hole presents a challenge. Typical use cases include production machining environments and repair operations where thread integrity and pull-out strength are critical.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/4-20 UNC thread specification with bottoming chamfer (1 to 1.5 thread pitches) for threading close to the bottom of blind holes\u003c\/li\u003e\n  \u003cli\u003eCobalt high-speed steel construction for increased heat resistance and tool life in tough alloys\u003c\/li\u003e\n  \u003cli\u003eSteam oxide coating improves lubricity and reduces galling during the forming process\u003c\/li\u003e\n  \u003cli\u003eH6 thread limit for controlled, consistent thread fit in precision applications\u003c\/li\u003e\n  \u003cli\u003eThread-forming (chipless) action eliminates chip buildup in blind holes\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread direction; no coolant-through requirement simplifies setup\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for blind hole thread forming in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces requiring a 1\/4-20 UNC internal thread.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThread forming taps must be used with a properly sized forming tap drill  -  consult a tap drill chart for the correct hole diameter before tapping. Apply a threading fluid or cutting oil appropriate for the workpiece material to reduce friction and extend tool life. Ensure the workpiece is securely fixtured and the tap is aligned true to the hole axis before beginning the tapping cycle. Always follow applicable machine shop safety practices and de-energize equipment before changing tooling.\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\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 1.5 pitches\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: H6\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\u003eMaterial Application\u003c\/strong\u003e: Alloy Steel, Aluminum, Carbon Steel, Die Steel, Hardened Steel, Stainless Steel\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\u003eCoolant Through\u003c\/strong\u003e: No\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: 0.02 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: 1400125701\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51741309370674,"sku":"1400125701","price":31.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f9e0a7535aeb52c331c9ab34d6077839_735f7688-f479-4d28-93bc-ab06f39149cb.jpg?v=1788830700","url":"https:\/\/voomisupply.com\/products\/osg-1400125701-thread-forming-tap-1-4-20-unc-bottoming-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}