{"product_id":"osg-1400137600-thread-forming-tap-3-8-24-unf-cobalt-h7","title":"Osg 1400137600 Thread Forming Tap 3\/8-24 Unf Cobalt H7","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1400137600 is a thread forming tap in the HY-PRO NRT series, designed for cold-forming internal threads without cutting. Sized at 3\/8-24 UNF with a modified bottoming chamfer of 2 to 2.5 threads, it drives material to shape rather than removing chips, making it well-suited for blind hole applications where chip evacuation is a concern. Built from cobalt high-speed steel with a bright finish and an H7 thread limit, this tap handles demanding materials including alloy steel, stainless steel, hardened steel, and aluminum. Licensed machinists and toolroom technicians are the primary users.\u003c\/p\u003e\u003cp\u003eThis tap is applied in blind hole threading operations across a range of ferrous and non-ferrous workpiece materials. The modified bottoming chamfer allows threading close to the bottom of a blind hole while still providing enough lead for reliable thread form initiation. It is rated for use in alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum, covering material application codes P and N. Typical applications include precision machined components in aerospace, automotive, and industrial manufacturing environments where thread quality and hole integrity are critical.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCold-forming design eliminates chips, reducing risk of chip packing in blind holes\u003c\/li\u003e\n\u003cli\u003eCobalt construction provides heat and wear resistance in tough alloy and stainless steel materials\u003c\/li\u003e\n\u003cli\u003eModified bottoming chamfer (2 to 2.5 threads) enables threading close to blind hole bottom\u003c\/li\u003e\n\u003cli\u003eH7 thread limit for Class 2B fit — suitable for standard tolerance threaded assemblies\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction, 3\/8-24 UNF\u003c\/li\u003e\n\u003cli\u003eBright finish with no coolant-through requirement, compatible with flood or brush-applied cutting fluid\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eRated for use in alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum workpieces. Designed for blind hole threading applications requiring a 3\/8-24 UNF internal thread to Class 2B fit with H7 thread limit.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed by machinists or toolroom technicians using a tapping machine, CNC machining center, or hand tap wrench. Power down or lock out the spindle before loading or changing taps. Verify proper tap drill size for the 3\/8-24 UNF thread before drilling the pilot hole, as undersize or oversize holes will degrade thread form quality. Apply appropriate cutting fluid for the workpiece material to reduce tool wear and extend tap life.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-24 UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 24\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: H7\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 2.5 threads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\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: 2.938 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.752 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 1.252 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.381 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.286 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\u003eCoolant Through\u003c\/strong\u003e: No\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: 0.145 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: 1400137600\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51754022371634,"sku":"1400137600","price":44.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f9e0a7535aeb52c331c9ab34d6077839_a4fa2286-733d-4136-b813-c8cf4cd04de2.jpg?v=1788943022","url":"https:\/\/voomisupply.com\/products\/osg-1400137600-thread-forming-tap-3-8-24-unf-cobalt-h7","provider":"Voomi Supply","version":"1.0","type":"link"}