{"product_id":"osg-2918001-spiral-flute-tap-8-32-unc-modified-bottoming","title":"Osg 2918001 Spiral Flute Tap 8-32 Unc Modified Bottoming","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 2918001 is a spiral flute tap designed for cutting 8-32 UNC internal threads in a wide range of ferrous materials. It features a 45-degree helix angle that evacuates chips upward and out of the hole, making it well suited for blind-hole tapping applications where chip packing is a common problem. The tap is manufactured from vanadium high-speed steel and carries a steam oxide coating that reduces friction and provides a measure of corrosion resistance during service and storage. The modified bottoming chamfer allows threading close to the bottom of a blind hole. Machinists and tooling technicians working in production or maintenance environments are the primary users of this tap.\u003c\/p\u003e\u003cp\u003eThis tap is intended for use in materials including alloy steel, carbon steel, cast iron, stainless steel, die steel, and hardened steel. The H7 thread limit designates a slightly oversized tolerance class, which accommodates surface coatings or plating on finished parts. It is applicable in CNC machining centers, drill presses, and hand-tapping setups where a 8-32 UNC thread form is required. Coolant-through capability is not available on this tap, so external cutting fluid application is recommended when tapping harder materials.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e45-degree right-hand spiral flute geometry promotes upward chip evacuation in blind holes\u003c\/li\u003e\n\u003cli\u003eModified bottoming chamfer for threading near the bottom of a blind bore\u003c\/li\u003e\n\u003cli\u003eVanadium high-speed steel construction for improved wear resistance over standard HSS\u003c\/li\u003e\n\u003cli\u003eSteam oxide coating reduces friction and provides corrosion resistance\u003c\/li\u003e\n\u003cli\u003eH7 thread limit suits applications where finished parts will receive a surface coating or plating\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction, compatible with standard tapping equipment and tap holders\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for cutting 8-32 UNC right-hand internal threads. Rated for use in alloy steel, carbon steel, cast iron, stainless steel, die steel, and hardened steel workpieces.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tap should be installed by a qualified machinist or tooling technician. Power down or de-energize any machine tool before changing tooling. Use a properly sized tap wrench or CNC tap holder to maintain axial alignment and prevent tap breakage. Apply a suitable cutting fluid for the workpiece material, particularly when tapping stainless or hardened steel, to extend tool life and produce a clean thread form.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 8-32\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: 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: 45 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\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: Modified Bottoming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 32\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Vanadium High-Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Steam Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.251 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 0.751 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.168 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.131 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.015 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 290\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: 2918001\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51746675786034,"sku":"2918001","price":44.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/44f487a67d69ce20fafcb77ce1e9fad7.jpg?v=1788872521","url":"https:\/\/voomisupply.com\/products\/osg-2918001-spiral-flute-tap-8-32-unc-modified-bottoming","provider":"Voomi Supply","version":"1.0","type":"link"}