{"product_id":"osg-2211401-spiral-flute-tap-4-40-unc-modified-bottoming","title":"Osg 2211401 Spiral Flute Tap 4-40 Unc Modified Bottoming","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 2211401 is a spiral flute tap designed for cutting 4-40 UNC internal threads in a wide range of ferrous materials. It features a 45-degree right-hand helix with three flutes, which evacuates chips upward and away from the cutting zone  -  making it well suited for blind-hole tapping where chip packing is a concern. The modified bottoming chamfer allows threading close to the bottom of a hole. Manufactured from vanadium high-speed steel and finished with a steam oxide coating, the 2211401 offers enhanced wear resistance and lubricity under typical shop and field machining conditions.\u003c\/p\u003e\n\u003cp\u003eThis tap is intended for use in precision machining, toolroom, and maintenance-repair-operations environments. Its 2B class of fit produces standard commercial internal thread tolerances, appropriate for most fastener and assembly applications. Suitable for tapping alloy steel, carbon steel, cast iron, die steel, hardened steel, and stainless steel workpieces. It is typically run on CNC machining centers, tapping machines, or hand-held drill presses by machinists and tool-and-die professionals. No coolant-through capability is required for this design.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e45-degree spiral flute helix promotes upward chip evacuation in blind-hole applications\u003c\/li\u003e\n  \u003cli\u003eModified bottoming chamfer for threading near the base of a blind hole\u003c\/li\u003e\n  \u003cli\u003eVanadium high-speed steel construction for elevated wear and heat resistance\u003c\/li\u003e\n  \u003cli\u003eSteam oxide coating reduces friction and improves lubricity during cutting\u003c\/li\u003e\n  \u003cli\u003e2B class of fit meets standard commercial internal thread tolerance requirements\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread and right-hand flute direction for conventional tapping operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-use spiral flute tap for applications requiring 4-40 UNC, 2B class of fit internal threads in alloy steel, carbon steel, cast iron, die steel, hardened steel, and stainless steel.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eTaps should be installed and operated by qualified machinists familiar with threading speeds, feeds, and lubrication requirements for the workpiece material. Ensure the workpiece is securely fixtured and the tap is properly aligned with the pilot hole before beginning the tapping cycle. Use appropriate tapping fluid or cutting oil to extend tool life and improve thread quality. Replace the tap if cutting resistance increases significantly or thread form quality degrades.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-40\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 40\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 2B\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\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\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\u003eOverall Length\u003c\/strong\u003e: 2.205 inches (56 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.196 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1894 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.1875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.11 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.005 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 220\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: 2211401\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51742068408626,"sku":"2211401","price":54.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b7e3959387b29dd53ebcc4f633dcbfc3_f0f0b190-a026-4110-b877-83c05cd3cda6.jpg?v=1788835204","url":"https:\/\/voomisupply.com\/products\/osg-2211401-spiral-flute-tap-4-40-unc-modified-bottoming","provider":"Voomi Supply","version":"1.0","type":"link"}