{"product_id":"osg-2885605-spiral-point-tap-1-4-20-unc-tin-hss","title":"Osg 2885605 Spiral Point Tap 1\/4-20 Unc Tin Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 2885605 is a spiral point plug tap designed for threading 1\/4-20 UNC holes in ferrous and non-ferrous workpieces. The spiral point geometry pushes chips forward ahead of the cutting zone, making it well suited for through-hole tapping applications where chip evacuation is critical. Ground from high-speed steel (HSS) stock and finished with a titanium nitride (TiN) coating, this tap delivers improved wear resistance and reduced friction compared to uncoated HSS. It carries a 2B class of fit and an H3 thread limit, producing threads that meet standard tolerance for most fastener assemblies.\u003c\/p\u003e\n\u003cp\u003eThis tap is rated for use in aluminum, cast aluminum, low-carbon steel, and medium-carbon steel. The plug chamfer distributes cutting load across the first few threads, making it the standard choice for general production tapping and repair work. It is commonly used in machine shops, maintenance facilities, and light manufacturing where 1\/4-20 UNC threads are tapped frequently. The right-hand thread direction is compatible with conventional tapping spindles and hand tap handles. No coolant-through capability is present, so flood or brush-applied cutting fluid should be used for optimal tool life in steel.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSpiral point geometry advances chips forward — ideal for through-hole tapping\u003c\/li\u003e\n  \u003cli\u003eTiN coating increases surface hardness and reduces built-up edge in aluminum and steel\u003c\/li\u003e\n  \u003cli\u003eH3 thread limit and 2B class of fit for standard tolerance threaded assemblies\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer distributes cutting load for smooth thread formation in production use\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction provides toughness for hand and machine tapping\u003c\/li\u003e\n  \u003cli\u003e2-flute design reduces torque requirements in softer materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eRated for tapping aluminum, cast aluminum, low-carbon steel, and medium-carbon steel in 1\/4-20 UNC through-hole applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap should be installed and operated by a machinist or skilled maintenance technician familiar with tapping procedures. Secure the workpiece firmly before tapping and ensure the tap is aligned perpendicular to the drilled hole to avoid tap breakage. Apply cutting fluid appropriate for the workpiece material — sulfur-based fluid for steel, water-soluble or petroleum-based fluid for aluminum. Reverse the tap periodically when hand tapping to break chips and prevent galling.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-20 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Plug\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: H3\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: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.638 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.255 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\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: 0.012 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: 2885605\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51733063434546,"sku":"2885605","price":25.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/39516530527d75eb703f3857a8858cfc.jpg?v=1788751052","url":"https:\/\/voomisupply.com\/products\/osg-2885605-spiral-point-tap-1-4-20-unc-tin-hss","provider":"Voomi Supply","version":"1.0","type":"link"}