{"product_id":"hertel-75987701-roughing-end-mill-3-8-in-3-flute-cobalt","title":"Hertel 75987701 Roughing End Mill 3\/8 in 3 Flute Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL 75987701 is a single-end roughing end mill designed for aggressive material removal in milling operations. Built from M42 cobalt high-speed steel, it delivers heat and wear resistance needed for hard or abrasive workpieces. The TiCN coating further extends tool life by reducing friction and edge buildup. At 3\/8 inch diameter with 3 coarse-pitch flutes, it produces a characteristic corncob chip-breaking profile that reduces cutting forces and allows deeper passes. The center-cutting geometry allows plunge entry as well as peripheral and slot milling. Licensed machinists and CNC operators rely on this geometry for roughing operations where surface finish is secondary to material removal rate.\u003c\/p\u003e\n\u003cp\u003eThis end mill suits ferrous and non-ferrous roughing applications in vertical mills, CNC machining centers, and manual knee mills. The 3\/4 inch length of cut and 2-1\/2 inch overall length make it appropriate for shallow-to-moderate pocket depths and shoulder milling. The right-hand cutting and right-hand flute direction are standard for conventional and climb milling on most setups. It is well suited for tool and die shops, job shops, and maintenance machining environments where cobalt tooling is preferred over carbide for interrupted cuts or hard-spot workpieces.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eM42 cobalt construction for improved red hardness and toughness compared to standard HSS\u003c\/li\u003e\n  \u003cli\u003eTiCN coating reduces friction, resists built-up edge, and extends tool life\u003c\/li\u003e\n  \u003cli\u003eCoarse-pitch roughing profile breaks chips and reduces radial cutting forces\u003c\/li\u003e\n  \u003cli\u003eCenter-cutting design allows direct plunge entry without a pre-drilled hole\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut and right-hand flute spiral for standard milling setups\u003c\/li\u003e\n  \u003cli\u003e3\/8 inch shank matches 3\/8 inch collets, end mill holders, and set-screw holders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a direct-fit replacement for 3\/8 inch single-end roughing end mills used in standard collet chucks, end mill holders, and Weldon-style set-screw holders accepting a 3\/8 inch shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or CNC setup technicians. Always power down and lock out the spindle before loading or removing tooling. Seat the shank fully into the holder to the recommended gauge line and torque set screws or collet nuts per the holder manufacturer specifications. Inspect the cutting edges and coating for damage before each use; a chipped roughing end mill increases cutting forces and can damage the workpiece or spindle.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.375 inches (3\/8 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Cobalt (M42 grade)\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\u003eLength of Cut\u003c\/strong\u003e: 0.75 inches (3\/4 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.375 inches (3\/8 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches (2-1\/2 inch)\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\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: 75987701\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51728606003506,"sku":"75987701","price":34.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a5d80110c3857c760109151493013631.jpg?v=1788693884","url":"https:\/\/voomisupply.com\/products\/hertel-75987701-roughing-end-mill-3-8-in-3-flute-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}