{"product_id":"walter-prototyp-6245723-spiral-flute-tap-1-4-28-unf","title":"Walter-prototyp 6245723 Spiral Flute Tap 1\/4-28 Unf","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe WALTER-PROTOTYP 6245723 is a spiral flute tap designed for cutting 1\/4-28 UNF internal threads in a wide range of workpiece materials. Built from powdered metal and finished with a THL (Hardlube) proprietary coating, this tap is engineered for reduced friction and extended tool life in production tapping operations. It features 3 right-hand flutes with a 45-degree helix angle and a modified bottoming chamfer, making it well suited for threading holes close to the bottom of a blind bore. Overall length is 3.15 inches (80.01 mm) and thread length is 0.394 inches (10.01 mm). Licensed machinists and toolroom professionals select this tap for demanding applications requiring consistent 2B class-of-fit tolerances.\u003c\/p\u003e\u003cp\u003eThis tap is appropriate for use in ferrous and non-ferrous applications including steel, stainless steel, gray cast iron, malleable cast iron, spheroidal cast iron, vermicular cast iron, cast steel, aluminum, and other non-ferrous metals. The fast flute style promotes efficient chip evacuation, which is especially critical in blind-hole tapping. Coolant-through capability is not included. This tap is suited for CNC machining centers, drill presses, and tapping machines where controlled feed tapping is standard practice. Series AEP2351302.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1\/4-28 UNF thread form with 2B class of fit for consistent tolerance control\u003c\/li\u003e\n\u003cli\u003eModified bottoming chamfer allows threading close to the bottom of blind holes\u003c\/li\u003e\n\u003cli\u003e45-degree helix angle with fast flute style aids chip ejection during blind-hole tapping\u003c\/li\u003e\n\u003cli\u003ePowdered metal construction provides hardness and wear resistance across mixed-material applications\u003c\/li\u003e\n\u003cli\u003eTHL (Hardlube) proprietary coating reduces cutting friction and extends tool life\u003c\/li\u003e\n\u003cli\u003eRight-hand thread and right-hand flute direction; no coolant-through required\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eCompatible workpiece materials include steel, stainless steel, cast iron, aluminum, and non-ferrous metals. Part of WALTER-PROTOTYP series AEP2351302. Designed as an OEM-style production tap for 1\/4-28 UNF threading operations in blind and through-hole applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or toolroom professional. Ensure the spindle is fully stopped and the machine is de-energized before changing tooling. Use proper tapping fluid or cutting oil appropriate for the workpiece material to supplement the coating and maximize tool life. Follow machine manufacturer feed-rate and speed recommendations for the tap diameter and material being threaded; do not exceed the rated tapping depth of 1.02 inches (25.91 mm).\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-28 UNF\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\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\u003eFlute Style\u003c\/strong\u003e: Fast\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Powdered Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: THL (Hardlube Proprietary)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.15 inches (80.01 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 0.394 inches (10.01 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapping Depth\u003c\/strong\u003e: 1.02 inches (25.91 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.255 inches (6.48 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 0.626 inches\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: 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: AEP2351302\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241600\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: WALTER-PROTOTYP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 6245723\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WALTER","offers":[{"title":"Default Title","offer_id":67910110085426,"sku":"6245723","price":124.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9100fe908c56628ca3b60d49a9999ec0.jpg?v=1791195943","url":"https:\/\/voomisupply.com\/products\/walter-prototyp-6245723-spiral-flute-tap-1-4-28-unf","provider":"Voomi Supply","version":"1.0","type":"link"}