{"product_id":"osg-1400107905-thread-forming-tap-5-40-unc-cobalt-tin","title":"Osg 1400107905 Thread Forming Tap 5-40 Unc Cobalt Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1400107905 is a thread forming tap in the HY-PRO NRT series, designed for cold-forming internal threads without cutting. It produces 5-40 UNC right-hand threads in blind holes using a modified bottoming chamfer with 2 to 2.5 chamfered threads. The tap is manufactured from cobalt steel and carries a titanium nitride (TiN) coating to extend tool life and reduce friction in demanding materials. Overall length is 1.938 inches, with a shank diameter of 0.141 inches and a tapping depth of 0.626 inches. Thread limit is H5 with a Class 2B fit. This is a single-pass cold-forming tool installed by machinists and toolroom technicians in production and maintenance environments.\u003c\/p\u003e\u003cp\u003eThis tap is suited for blind hole threading operations in 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 allows threading close to the bottom of a blind hole, making it effective in tight-depth applications common in precision machining, fixture fabrication, and component repair work. The HY-PRO NRT series is built for use without coolant-through capability, relying on the TiN coating and cobalt substrate to manage heat in dry or flood-coolant setups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eModified bottoming chamfer with 2 to 2.5 chamfered threads for threading near blind hole bottoms\u003c\/li\u003e\n\u003cli\u003eCobalt steel construction provides heat resistance in tough alloys and hardened steels\u003c\/li\u003e\n\u003cli\u003eTiN coating reduces friction and extends tool life across material applications\u003c\/li\u003e\n\u003cli\u003eThread forming (chipless) design eliminates chip evacuation concerns in blind holes\u003c\/li\u003e\n\u003cli\u003eH5 thread limit with Class 2B fit for consistent thread quality\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction, 40 threads per inch, 5-40 UNC standard\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for blind hole thread forming in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces requiring 5-40 UNC internal threads at a Class 2B fit. Material application codes P and N apply.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThread forming taps require a precisely sized forming hole — consult a forming tap drill chart for the correct pilot hole diameter for 5-40 UNC before use. Secure the workpiece and use a calibrated tap wrench or CNC tapping head set to appropriate feed rates to avoid tap breakage. Apply tapping fluid or cutting oil appropriate to the workpiece material even in non-coolant-through setups to reduce galling. Inspect the tap for wear or chipping before each use, as cobalt tools can fracture without visible pre-failure in hardened materials.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5-40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\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\u003eThread Direction\u003c\/strong\u003e: Right Hand\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: H5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.938 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.299 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 0.626 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.141 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.110 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.1875 inches\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 Applications\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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.011 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: 1400107905\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51728872145202,"sku":"1400107905","price":36.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ef680bc334a573835449d625735d723d.jpg?v=1788697205","url":"https:\/\/voomisupply.com\/products\/osg-1400107905-thread-forming-tap-5-40-unc-cobalt-tin","provider":"Voomi Supply","version":"1.0","type":"link"}