{"product_id":"osg-2886305-spiral-point-tap-1-2-20-unf-tin-hss","title":"Osg 2886305 Spiral Point Tap 1\/2-20 Unf Tin Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 2886305 is a spiral point tap designed for cutting 1\/2-20 UNF right-hand internal threads in through-hole applications. Built from high-speed steel with a titanium nitride (TiN) coating, this tap delivers improved wear resistance and reduced friction compared to uncoated HSS tooling. It features a plug chamfer with 3 flutes and an H3 thread limit, making it well-suited for maintaining tight tolerances on 2B class of fit threaded connections. The overall length is 3.375 inches with a thread length of 0.941 inches and a shank diameter of 0.367 inches. Machinists and tool-and-die professionals use this tap in both manual and CNC tapping operations.\u003c\/p\u003e\n\u003cp\u003eThe 2886305 is rated for use in aluminum, cast aluminum, low-carbon steel, and medium-carbon steel. Its spiral point geometry pushes chips forward ahead of the cutting zone, which makes it most effective in through-hole threading where chip evacuation is unobstructed. The plug chamfer provides a gradual lead-in that distributes cutting load across multiple threads, reducing the risk of tap breakage at entry. This tap is a practical choice for production environments where consistent thread quality across repeated cycles is required.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/2-20 UNF thread form, right-hand cut, 2B class of fit\u003c\/li\u003e\n  \u003cli\u003e3-flute spiral point geometry for forward chip ejection in through-holes\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer for gradual thread engagement and reduced entry load\u003c\/li\u003e\n  \u003cli\u003eH3 thread limit for controlled tolerance on close-fit threaded assemblies\u003c\/li\u003e\n  \u003cli\u003eTiN coating extends tool life and reduces galling in steel and aluminum\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction provides toughness across a range of workpiece materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eRated for use in aluminum, cast aluminum, low-carbon steel, and medium-carbon steel workpieces. Intended for through-hole tapping applications requiring a 1\/2-20 UNF 2B thread form.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap should be installed by a qualified machinist in a tapping chuck, tapping head, or rigid CNC spindle that matches the 0.367-inch shank diameter. Always ensure the workpiece is securely fixtured and the tap is properly aligned to the drilled hole before engagement to prevent cross-threading or breakage. Use an appropriate cutting fluid or tapping compound for the workpiece material to maximize tool life and thread quality. Do not attempt to reverse or back the tap out under power without confirming the machine setup supports synchronized reversing.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/2-20 UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 2B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer\u003c\/strong\u003e: Plug\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.941 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.367 inches\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterrupted Thread\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Aluminum, Cast Aluminum, Low-Carbon Steel, Medium-Carbon Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.118 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: 2886305\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51748794237234,"sku":"2886305","price":60.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d0d2ba2d32c7346c9a592160d8b8f73e_4d87f96a-e6da-4ae7-a2cc-2c91fa063001.jpg?v=1788898477","url":"https:\/\/voomisupply.com\/products\/osg-2886305-spiral-point-tap-1-2-20-unf-tin-hss","provider":"Voomi Supply","version":"1.0","type":"link"}