{"product_id":"osg-2530001-spiral-point-tap-1-4-20-unc-3-flute-hss","title":"Osg 2530001 Spiral Point Tap 1\/4-20 Unc 3 Flute Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 2530001 is a spiral point tap designed to cut 1\/4-20 UNC right-hand threads in through-hole applications. Built from Vanadium High Speed Steel (HSS-E) with a steam oxide coating, it offers improved lubricity and resistance to chip welding during the threading process. The plug chamfer provides a gradual lead-in, distributing cutting forces across several threads. With 3 flutes and an H2 thread limit, this tap holds tight dimensional tolerances suited to a 2B class of fit. Overall length is 3.15 inches (80 mm) and thread length is 0.594 inches. It is installed by machinists, tool-and-die technicians, and maintenance professionals working with ferrous and non-ferrous materials.\u003c\/p\u003e\u003cp\u003eThe OSG 2530001 is suited for through-hole threading in a broad range of materials including aluminum, low-carbon steel, medium-carbon steel, high-carbon steel, alloy steel, die steel, stainless steel, and cast iron. The spiral point design pushes chips forward ahead of the tap rather than packing them behind it, making it the preferred choice for production threading on CNC machining centers, drill presses, and tapping machines where through-holes allow chip evacuation. It is typically used in general manufacturing, maintenance and repair operations, and fabrication shops.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/4-20 UNC thread form with right-hand cutting direction\u003c\/li\u003e\n\u003cli\u003e3-flute spiral point geometry pushes chips forward for clean through-hole threading\u003c\/li\u003e\n\u003cli\u003ePlug chamfer (approximately 3-5 thread lead-in) for smooth entry and cutting force distribution\u003c\/li\u003e\n\u003cli\u003eVanadium HSS-E construction for improved toughness and wear resistance over standard HSS\u003c\/li\u003e\n\u003cli\u003eSteam oxide coating reduces friction and improves chip flow\u003c\/li\u003e\n\u003cli\u003eH2 thread limit holds 2B class of fit tolerances\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard 1\/4-20 UNC through-hole threading applications across a wide range of workpiece materials including aluminum, stainless steel, alloy steel, die steel, cast iron, and low-, medium-, and high-carbon steels. Not intended for blind-hole applications where chip evacuation forward is not possible.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap is installed by machinists and maintenance technicians using a tapping machine, CNC machining center, or drill press with a tapping head. Ensure the workpiece is securely fixtured and the pilot hole is drilled to the correct tap drill diameter for 1\/4-20 UNC before threading. Apply appropriate cutting fluid for the workpiece material to extend tap life and improve thread finish. Do not use in blind holes where forward chip evacuation is blocked, as this may cause tap breakage.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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\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: H2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Type\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\u003eMaterial\u003c\/strong\u003e: Vanadium High Speed Steel (HSS-E)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Steam Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.15 inches (80 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.594 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\u003eInterrupted Thread\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 250\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.042 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: 2530001\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51741154148658,"sku":"2530001","price":35.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7a5a7dbb0fbdc54b75bf9b6760d04ce7.jpg?v=1788829668","url":"https:\/\/voomisupply.com\/products\/osg-2530001-spiral-point-tap-1-4-20-unc-3-flute-hss","provider":"Voomi Supply","version":"1.0","type":"link"}