{"product_id":"osg-2948601-spiral-flute-tap-9-16-12-unc-vanadium-hss","title":"Osg 2948601 Spiral Flute Tap 9\/16-12 Unc Vanadium Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 2948601 is a spiral flute tap designed for cutting 9\/16-12 UNC right-hand internal threads in a wide range of ferrous materials. Built from 3% vanadium high-speed steel and finished with a steam oxide coating, this tap delivers durability and chip evacuation performance in demanding tapping operations. The modified bottoming chamfer allows threading close to the bottom of blind holes. With a 45-degree helix angle and 4 right-hand spiral flutes, it pulls chips up and out of the hole efficiently, reducing the risk of chip packing. Overall length is 3-19\/32 inches. This tool is intended for use by machinists and toolroom professionals in production and maintenance environments.\u003c\/p\u003e\u003cp\u003eThe OSG 2948601 is suited for tapping operations in alloy steel, carbon steel, cast iron, stainless steel, die steel, and hardened steel. The modified bottoming chamfer makes it appropriate for blind-hole applications where full thread depth near the bottom of the bore is required. The spiral flute geometry and steam oxide finish make it a reliable choice for both CNC machine tapping and hand-tapping setups where chip control is a priority.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e4 right-hand spiral flutes with 45-degree helix angle for efficient upward chip evacuation\u003c\/li\u003e\n\u003cli\u003eModified bottoming chamfer for threading close to the bottom of blind holes\u003c\/li\u003e\n\u003cli\u003e3% vanadium high-speed steel construction for increased wear resistance\u003c\/li\u003e\n\u003cli\u003eSteam oxide coating reduces friction and improves lubrication retention\u003c\/li\u003e\n\u003cli\u003eThread limit H3 for standard tolerance applications\u003c\/li\u003e\n\u003cli\u003eRight-hand thread direction, 9\/16-12 UNC specification\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for cutting 9\/16-12 UNC right-hand threads in alloy steel, carbon steel, cast iron, stainless steel, die steel, and hardened steel workpieces. Part of the OSG Series 290 spiral flute tap line.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eTapping operations should be performed by qualified machinists following standard toolroom safety practices. Ensure the workpiece is properly secured and the spindle is aligned with the hole axis before beginning the cut. Apply appropriate cutting fluid for the workpiece material to extend tool life and improve thread finish. When using in a CNC environment, verify spindle speed and feed rate against the tap manufacturer recommendations for the material being cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 9\/16-12 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: 4\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\u003eChamfer\u003c\/strong\u003e: Modified Bottoming\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3-19\/32 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.665 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.322 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: 3% 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\u003eSeries\u003c\/strong\u003e: 290\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.145 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: 2948601\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51744432488754,"sku":"2948601","price":135.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/02ab667616efb4d987ba47b34c328acb_6f257940-e554-45ac-b0f3-9ec4e101558e.jpg?v=1788856417","url":"https:\/\/voomisupply.com\/products\/osg-2948601-spiral-flute-tap-9-16-12-unc-vanadium-hss","provider":"Voomi Supply","version":"1.0","type":"link"}