{"product_id":"osg-2986105-spiral-flute-tap-3-8-24-unf-bottoming-tin-hss","title":"Osg 2986105 Spiral Flute Tap 3\/8-24 Unf Bottoming Tin Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 2986105 is a spiral flute bottoming tap designed for cutting 3\/8-24 UNF internal threads in aluminum and carbon steel workpieces. It features a 50-degree helix angle that efficiently evacuates chips up and out of the flute, making it well-suited for blind-hole tapping where chip packing is a common concern. The tap is manufactured from high-speed steel and carries a titanium nitride (TiN) coating to extend tool life and reduce friction at the cutting edge. With an overall length of 2.938 inches and a shank diameter of 0.381 inches, it fits standard tap holders used in machining and fabrication environments. A bottoming chamfer allows threading to within a few pitches of a blind hole bottom.\u003c\/p\u003e\u003cp\u003eThis tap is appropriate for precision threading work in machine shops, production lines, and maintenance-repair-operations settings. The 2B class of fit is the standard tolerance class for most general-purpose UNF threaded fastener applications in both light industrial and structural assemblies. The right-hand flute direction and right-hand thread form match conventional CNC and manual tapping operations. It is sold individually and is suited for use in both hand-tapping and machine-tapping setups where consistent thread quality is required.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eBottoming chamfer for threading close to the bottom of blind holes\u003c\/li\u003e\n\u003cli\u003e50-degree spiral helix angle promotes upward chip evacuation\u003c\/li\u003e\n\u003cli\u003eTiN coating reduces friction and extends cutting life compared to uncoated HSS\u003c\/li\u003e\n\u003cli\u003e2B class of fit meets standard tolerances for general-purpose UNF threaded assemblies\u003c\/li\u003e\n\u003cli\u003eCompatible with aluminum and carbon steel workpiece materials\u003c\/li\u003e\n\u003cli\u003eRight-hand thread and right-hand flute direction for conventional tapping operations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for cutting 3\/8-24 UNF right-hand internal threads in aluminum and carbon steel. Fits standard tap holders accepting a 0.381-inch shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed by machinists and tooling technicians using standard tap holders, tapping heads, or CNC toolholders. Ensure the workpiece is securely fixtured and the pilot hole diameter matches the recommended tap drill size for 3\/8-24 UNF before beginning the tapping operation. Use appropriate cutting fluid for the workpiece material to preserve tool life and thread quality. Inspect the tap for wear or chipping before each use, as a damaged cutting edge will produce out-of-tolerance threads.\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\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\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Style\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 50 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Bottoming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiN (Titanium Nitride)\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: 0.751 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 1.251 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 Length\u003c\/strong\u003e: 0.4375 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\u003eMaterial Application\u003c\/strong\u003e: Aluminum, Carbon Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOversize\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.073 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: 2986105\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51727486746930,"sku":"2986105","price":59.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a89ebc97203a3ea2fa95a74c36ebf9d0.jpg?v=1788678432","url":"https:\/\/voomisupply.com\/products\/osg-2986105-spiral-flute-tap-3-8-24-unf-bottoming-tin-hss","provider":"Voomi Supply","version":"1.0","type":"link"}