{"product_id":"osg-1400136900-thread-forming-tap-3-8-24-unf-bottoming-cobalt","title":"Osg 1400136900 Thread Forming Tap 3\/8-24 Unf Bottoming Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1400136900 is a thread forming tap in the HY-PRO NRT series, designed for cold-forming internal threads without cutting or producing chips. Built from cobalt high-speed steel with a bright finish, it is engineered for demanding threading applications in tough materials including alloy steel, stainless steel, hardened steel, and carbon steel. The bottoming chamfer of 1 to 1.5 threads allows threading to the bottom of blind holes. With a 3\/8-24 UNF thread specification and a Class 3B fit at Thread Limit H5, this tap delivers precise, tight-tolerance threads suited for high-strength fastening applications in production and maintenance environments.\u003c\/p\u003e\u003cp\u003eThis tap is intended for blind hole threading in ferrous and non-ferrous materials commonly encountered in industrial manufacturing, tooling, and maintenance machining. The right-hand thread direction and UNF thread form make it a standard choice for tapping fine-thread fastener holes in alloy steel, die steel, carbon steel, aluminum, and stainless steel components. It is typically used by machinists, tool and die makers, and maintenance mechanics on drill press, tapping machine, or CNC equipment where controlled feed and speed are maintained. Coolant-through capability is not provided on this tap.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCobalt high-speed steel construction for heat resistance and durability in hard and abrasive materials\u003c\/li\u003e\n\u003cli\u003eBottoming chamfer (1 to 1.5 threads) allows threading close to the bottom of blind holes\u003c\/li\u003e\n\u003cli\u003eThread forming design eliminates chips, reducing the risk of chip packing in blind holes\u003c\/li\u003e\n\u003cli\u003eClass 3B fit at Thread Limit H5 for tight-tolerance thread production\u003c\/li\u003e\n\u003cli\u003eRight-hand, 3\/8-24 UNF thread form suits standard fine-thread fastener applications\u003c\/li\u003e\n\u003cli\u003eBright finish with no coolant-through requirement for simplified setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for threading 3\/8-24 UNF blind holes in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces. Material Application Codes P and N apply.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThread forming taps are installed by machinists using a tapping machine, drill press, or CNC machining center with controlled feed rate matched to the thread pitch. The workpiece spindle and power source must be fully stopped before tap changes or manual inspection. Proper tapping fluid or cutting oil appropriate for the workpiece material should be applied to reduce tap wear and ensure accurate thread form. Follow shop-specific tooling procedures and applicable OSHA machine guarding requirements when operating tapping equipment.\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\u003eChamfer\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfered Threads\u003c\/strong\u003e: 1 to 1.5 threads\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: 3B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Blind Hole Threading\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: Bright\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\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\u003eSeries\u003c\/strong\u003e: HY-PRO NRT\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: 1400136900\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51727085633842,"sku":"1400136900","price":44.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e5394466bc5a3525c86d14d8cd86adb5.jpg?v=1788673066","url":"https:\/\/voomisupply.com\/products\/osg-1400136900-thread-forming-tap-3-8-24-unf-bottoming-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}