{"product_id":"osg-2230001-spiral-flute-tap-1-4-20-unc-3-flute-2b","title":"Osg 2230001 Spiral Flute Tap 1\/4-20 Unc 3 Flute 2B","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 2230001 is a spiral flute tap designed to cut 1\/4-20 UNC internal threads in a range of ferrous metals. Manufactured from vanadium high-speed steel and finished with a steam oxide coating, it offers improved wear resistance and chip evacuation compared to standard high-speed steel taps. The 45-degree helix angle drives chips up and out of the flute, making this tap well suited for blind-hole applications where chip packing is a concern. The modified bottoming chamfer allows threading closer to the bottom of a blind hole than a plug chamfer. Three flutes provide a balance of chip clearance and thread form support. Licensed machinists, tool-and-die makers, and maintenance technicians are the primary users.\u003c\/p\u003e\n\u003cp\u003eThis tap is intended for use in alloy steel, carbon steel, cast iron, die steel, hardened steel, and stainless steel. The modified bottoming style makes it a second-operation tap, typically following a spiral point or plug tap to establish the thread and then finishing near the bottom of a blind hole. The 2B class of fit produces a standard tolerance internal thread suitable for general mechanical assemblies requiring a free-running fit with a 2A external thread. It is appropriate for both production environments and jobsite repair work where precise thread engagement depth is required.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/4-20 UNC thread form, 20 threads per inch, right-hand thread direction\u003c\/li\u003e\n  \u003cli\u003eModified bottoming chamfer for threading close to the bottom of blind holes\u003c\/li\u003e\n  \u003cli\u003e45-degree helix angle promotes upward chip evacuation in blind-hole applications\u003c\/li\u003e\n  \u003cli\u003eVanadium high-speed steel construction for improved toughness and wear resistance\u003c\/li\u003e\n  \u003cli\u003eSteam oxide coating reduces friction and provides mild corrosion protection during storage\u003c\/li\u003e\n  \u003cli\u003e2B class of fit for standard free-running internal thread tolerance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for cutting 1\/4-20 UNC 2B internal threads in alloy steel, carbon steel, cast iron, die steel, hardened steel, and stainless steel workpieces. Not rated for coolant-through use.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eUse in a tapping chuck, CNC machining center, or hand tap wrench rated for the torque required by the workpiece material. Always secure the workpiece before tapping and apply appropriate cutting fluid to extend tool life, particularly in stainless steel or hardened materials. The modified bottoming style is a second-operation tap — a plug or spiral point tap should be used first to start and develop the thread before switching to this tap to finish near the hole bottom. Do not exceed the recommended feed rate for the material, as taps cannot back out chips if broken below the surface.\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 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 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: 2B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer Style\u003c\/strong\u003e: Modified Bottoming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\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\u003eOverall Length\u003c\/strong\u003e: 3.15 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.397 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 1.177 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\u003eSquare Length\u003c\/strong\u003e: 0.3125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.191 inches\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\/Finish\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\u003eOversize\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.039 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: 2230001\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51728753525042,"sku":"2230001","price":45.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5cd97531f4041f53b8b119b52cd1ac62.jpg?v=1788695850","url":"https:\/\/voomisupply.com\/products\/osg-2230001-spiral-flute-tap-1-4-20-unc-3-flute-2b","provider":"Voomi Supply","version":"1.0","type":"link"}