{"product_id":"hertel-75987636-roughing-end-mill-3-8-in-4-flute-cobalt","title":"Hertel 75987636 Roughing End Mill 3\/8 in 4 Flute Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 75987636 is a single-end roughing end mill designed for aggressive material removal in milling applications. Built from M42 cobalt high-speed steel and finished with a TiCN coating, it handles tough ferrous and non-ferrous materials with improved heat and wear resistance. The 3\/8 inch diameter, 4-flute configuration with a coarse pitch geometry breaks up chips along the cutting edge, reducing vibration and allowing higher feed rates than standard end mills. Center-cutting capability allows plunge entry without a pre-drilled hole. Machinists and toolroom professionals use this style of end mill for roughing passes where cycle time and tool life are the priorities.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for manual milling machines and CNC machining centers performing roughing operations in steel, stainless, cast iron, and similar materials. The 3\/8 inch shank fits standard ER collet chucks, end mill holders, and Weldon-style holders of the same bore size. With a 1.5 inch length of cut and a 3.25 inch overall length, it is well proportioned for shallow-to-medium depth pockets, slots, and profiling passes in production and job-shop environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM42 cobalt steel construction for elevated hot hardness and wear resistance\u003c\/li\u003e\n\u003cli\u003eTiCN coating extends tool life and reduces friction at the cutting edge\u003c\/li\u003e\n\u003cli\u003eCoarse pitch roughing geometry reduces cutting forces and chip recutting\u003c\/li\u003e\n\u003cli\u003eCenter-cutting design allows direct plunge entry\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand flute direction for standard spindle operation\u003c\/li\u003e\n\u003cli\u003eSingle-end configuration with 4 flutes and 1.5 inch length of cut\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard production roughing end mill fitting any 3\/8 inch end mill holder, ER collet, or Weldon shank holder of matching bore diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes must be performed with the spindle fully stopped and the machine in a safe, locked-out state per shop safety protocols. Ensure the shank is fully seated in the holder and that set screws or collet nuts are torqued per the holder manufacturer's specifications. Inspect the collet or holder for runout before taking roughing cuts at elevated feed rates. Do not exceed the end mill's rated depth of cut or feed recommendations for the workpiece material.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 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: 1.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Cobalt (M42)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: M42\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiCN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePitch\u003c\/strong\u003e: Coarse\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Single End\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\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\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: 75987636\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51733239660850,"sku":"75987636","price":36.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/917666beda752c996b36b7bc42b31389_650d6496-1b1e-47f4-936b-3ff3cf2c7f15.jpg?v=1788753169","url":"https:\/\/voomisupply.com\/products\/hertel-75987636-roughing-end-mill-3-8-in-4-flute-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}