{"product_id":"hertel-91192625-roughing-end-mill-3-8-in-4-flute-cobalt","title":"Hertel 91192625 Roughing End Mill 3\/8 in 4 Flute Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 91192625 is a single-end roughing end mill designed for aggressive material removal in milling operations. Built from M42 cobalt high-speed steel and coated with TiAlN for heat and wear resistance, this tool handles tough ferrous materials at elevated cutting speeds. The coarse pitch flute geometry breaks up chips along the cutting edge, reducing vibration and cutting forces compared to standard end mills. At 3\/8 inch diameter with a 3\/4 inch length of cut and 2.5 inch overall length, it fits standard tool holders used in vertical mills, knee mills, and CNC machining centers. Machinists and toolroom operators use this type of end mill for roughing passes before finishing.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for roughing operations in ferrous and difficult-to-machine alloys where chip control and tool life under heat are priorities. The 3\/8 inch shank diameter matches the mill diameter, allowing direct mounting in standard collet chucks or end mill holders. The right-hand cut and right-hand flute direction are the conventional configuration for most vertical and horizontal milling setups. The center-cutting geometry allows plunge entry in addition to peripheral cuts.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM42 cobalt HSS construction for improved red hardness and wear resistance over standard M2 HSS\u003c\/li\u003e\n\u003cli\u003eTiAlN coating extends tool life in high-temperature cutting conditions\u003c\/li\u003e\n\u003cli\u003eCoarse pitch roughing profile reduces cutting forces and manages chip load on each flute\u003c\/li\u003e\n\u003cli\u003eCenter-cutting design permits direct plunge entry without a pilot hole\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, right-hand helix — standard orientation for most milling machines\u003c\/li\u003e\n\u003cli\u003eSingle-end configuration with 3\/4 inch length of cut suitable for shallow-to-moderate depth passes\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard 3\/8 inch collet chucks, end mill holders, and milling arbors on vertical mills, knee mills, and CNC machining centers.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes must be performed with the machine spindle fully stopped and locked out per OSHA lockout\/tagout procedures. Seat the shank fully in the holder and torque the retention screw or collet nut to the tool holder specification. Inspect the cutting edges for chips or wear before each use. Verify spindle speed and feed rate are within the recommended range for the workpiece material before initiating a cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 3\/8 inch (0.375 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 3\/4 inch (0.7500 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inch (0.3750 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Cobalt (M42 HSS)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiAlN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePitch\u003c\/strong\u003e: Coarse\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting 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\u003eCenter Cutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Helix\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.504 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112803\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HERTEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 91192625\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51750615482674,"sku":"91192625","price":36.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/52d6cb789c0fbe385b67bf7904e6f188_cdb4c2f4-2c19-4e6b-a8fc-d39dcb51b835.jpg?v=1788917416","url":"https:\/\/voomisupply.com\/products\/hertel-91192625-roughing-end-mill-3-8-in-4-flute-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}