{"product_id":"osg-1400144901-thread-forming-tap-1-2-20-unf-cobalt","title":"Osg 1400144901 Thread Forming Tap 1\/2-20 Unf Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1400144901 is a thread forming tap designed for cold-forming internal threads in ductile metals without cutting or producing chips. Part of the HY-PRO NRT series, it produces a 1\/2-20 UNF right-hand thread with a modified bottoming chamfer of 2 to 2.5 threads, allowing threading close to the bottom of a blind hole. The tap is manufactured from cobalt high-speed steel and finished with a steam oxide coating that provides lubricity and helps resist galling during the forming process. Overall length is 3.375 inches with a shank diameter of 0.367 inches. Class of fit is 2B with a thread limit of H8, making it suitable for close-tolerance work in production and maintenance environments.\u003c\/p\u003e\n\u003cp\u003eThis tap is rated for use in blind hole threading applications across a range of ferrous and non-ferrous materials including alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum. The modified bottoming chamfer makes it well suited for shallow through-to-bottom blind hole requirements where a standard bottoming or plug tap may not reach the required depth. Machinists, tool-and-die makers, and maintenance technicians working in production shops, fabrication facilities, and MRO environments will find this tap applicable across a broad range of workpiece materials.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eThread size 1\/2-20 UNF right-hand thread, class of fit 2B, thread limit H8\u003c\/li\u003e\n  \u003cli\u003eModified bottoming chamfer with 2 to 2.5 chamfered threads for near-bottom blind hole access\u003c\/li\u003e\n  \u003cli\u003eCobalt high-speed steel construction for improved heat and wear resistance in tough alloys\u003c\/li\u003e\n  \u003cli\u003eSteam oxide coating reduces friction and galling during cold-forming operations\u003c\/li\u003e\n  \u003cli\u003eThread forming design produces no chips, eliminating chip-clearing concerns in blind holes\u003c\/li\u003e\n  \u003cli\u003eCompatible with material application codes P and N covering steels and non-ferrous materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eRated for use in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces. Intended for blind hole threading applications requiring a 1\/2-20 UNF internal thread to class 2B fit.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThread forming taps require adequate lubrication or cutting fluid appropriate to the workpiece material; consult tooling guidelines for the specific material being tapped. Ensure the pilot hole diameter is sized correctly for a thread forming tap, as the required hole diameter differs from that used for a cutting tap of the same thread size. Secure the workpiece and use a rigid tapping setup or a tapping head to maintain axial alignment and avoid tap breakage. Power down or de-energize any machine spindle before changing or inspecting the tap.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/2-20 UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\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\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\u003eClass of Fit\u003c\/strong\u003e: 2B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.9213 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 1.933 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.367 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.275 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.4375 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\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 (14001)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.18 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: 1400144901\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51744594460978,"sku":"1400144901","price":72.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f9e0a7535aeb52c331c9ab34d6077839_7ba588e7-b975-495c-ac9b-e1b25ca90cdd.jpg?v=1788858769","url":"https:\/\/voomisupply.com\/products\/osg-1400144901-thread-forming-tap-1-2-20-unf-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}