{"product_id":"osg-2830001-spiral-point-tap-1-4-20-unc-3-flute-plug","title":"Osg 2830001 Spiral Point Tap 1\/4-20 Unc 3 Flute Plug","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 2830001 is a spiral point tap designed for cutting 1\/4-20 UNC internal threads in a wide range of ferrous and non-ferrous materials. The spiral point geometry pushes chips forward ahead of the tap, keeping the flutes clear and reducing the risk of tap breakage in through-hole applications. Made from vanadium high speed steel with a steam oxide coating, this tap delivers good wear resistance and lubricity across a broad range of materials. It features a plug chamfer, 3 flutes, an H3 thread limit, and a 3B class of fit. Overall length is 2.5 inches with a thread length of approximately 0.594 inches.\u003c\/p\u003e\n\u003cp\u003eThis tap is suited for through-hole threading operations in machine shops, maintenance facilities, and production environments. It is commonly used by machinists and maintenance technicians working with aluminum, cast iron, low-carbon steel, medium-carbon steel, high-carbon steel, alloy steel, die steel, stainless steel, and hardened steel. The plug chamfer makes it appropriate for starting in a hole and running through, requiring a clear chip-exit path at the bottom. It is part of OSG Series 280 and is sized for use in standard 1\/4-20 tapped holes found across general mechanical assemblies.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSpiral point geometry pushes chips forward, ideal for through-hole applications\u003c\/li\u003e\n  \u003cli\u003eVanadium high speed steel construction for durability across a range of workpiece materials\u003c\/li\u003e\n  \u003cli\u003eSteam oxide coating improves lubricity and reduces galling\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer for reliable thread entry and through-hole use\u003c\/li\u003e\n  \u003cli\u003eH3 thread limit and 3B class of fit for standard tolerance threading\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread direction, no coolant-through requirement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for threading 1\/4-20 UNC through-holes in aluminum, hardened steel, stainless steel, high-carbon steel, low-carbon steel, medium-carbon steel, alloy steel, die steel, and cast iron. Part of OSG Series 280.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall and operate this tap using a machine tap holder, tapping head, or CNC spindle set to right-hand rotation. Power down all equipment and secure the workpiece before setting up. Use appropriate tapping fluid or cutting oil for the workpiece material to extend tap life and improve thread finish. Inspect the through-hole for adequate clearance at the exit before threading to allow chips to evacuate freely.\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\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: H3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\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\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: 2.5 inches\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\u003eSeries\u003c\/strong\u003e: 280\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.031 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: 2830001\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51747421520178,"sku":"2830001","price":34.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/639c2943dedf2a34d0e6e36ae8557640.jpg?v=1788879843","url":"https:\/\/voomisupply.com\/products\/osg-2830001-spiral-point-tap-1-4-20-unc-3-flute-plug","provider":"Voomi Supply","version":"1.0","type":"link"}