{"product_id":"osg-1405010408-thread-forming-tap-3-8-16-unc-bottoming","title":"Osg 1405010408 Thread Forming Tap 3\/8-16 Unc Bottoming","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 1405010408 is a bottoming-style thread forming tap in the EXOTAP VP-NRT series, designed for cold-forming internal threads without cutting. It runs on 3\/8-16 UNC thread geometry and is manufactured from powdered metal high-speed steel with a TiCN (titanium carbonitride) coating for extended tool life in demanding materials. The bottoming chamfer — 1 to 1.5 thread pitch — allows threading close to the bottom of a blind hole. With an overall length of 2.9380 inches and a thread limit of H5, this tap is suited for precision threading to a Class 3B fit in production and maintenance applications.\u003c\/p\u003e\u003cp\u003eThis tap is built for blind hole threading across a broad range of workpiece materials, including alloy steel, carbon steel, die steel, hardened steel, stainless steel, and aluminum. The thread forming (chipless) design makes it especially effective in ductile materials where chip evacuation is a concern. It is a right-hand tap used in CNC machining centers, drill presses, and tapping machines in industrial manufacturing, tool and die, and general machining operations. Coolant-through is not supported on this model.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eThread forming (chipless) design eliminates chip evacuation issues in blind holes\u003c\/li\u003e\n\u003cli\u003eBottoming chamfer (1 to 1.5P) enables threading near the base of a blind hole\u003c\/li\u003e\n\u003cli\u003ePowdered metal high-speed steel construction for improved toughness and wear resistance\u003c\/li\u003e\n\u003cli\u003eTiCN coating reduces friction and extends tool life in ferrous and non-ferrous materials\u003c\/li\u003e\n\u003cli\u003eClass 3B fit, H5 thread limit for tight-tolerance applications\u003c\/li\u003e\n\u003cli\u003eRight-hand, 3\/8-16 UNC thread geometry\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for blind hole threading in alloy steel, aluminum, carbon steel, die steel, hardened steel, and stainless steel workpieces requiring 3\/8-16 UNC internal threads to a Class 3B fit.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed and operated by machinists using CNC equipment, drill presses, or dedicated tapping machines. Power down and lock out all equipment before changing or inspecting tooling. Use the correct tap holder or collet to maintain alignment and prevent tap breakage — misalignment is a primary cause of failure with forming taps. Apply appropriate tapping fluid or cutting oil for the workpiece material; thread forming generates higher torque than cutting taps, so torque capacity of the tapping machine or holder should be verified against the application before running production.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-16\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 1.5P\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\u003eThreads per Inch\u003c\/strong\u003e: 16\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\u003eMaterial\u003c\/strong\u003e: Powdered Metal High-Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN\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: EXOTAP VP-NRT (14050)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.086 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: 1405010408\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51734593372466,"sku":"1405010408","price":90.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/219f7caf0165a9628c75181e385a2c0c_bf452133-e152-4374-ab4a-4177cb7fa99e.jpg?v=1788763611","url":"https:\/\/voomisupply.com\/products\/osg-1405010408-thread-forming-tap-3-8-16-unc-bottoming","provider":"Voomi Supply","version":"1.0","type":"link"}