{"product_id":"hertel-e2041040-square-end-mill-5-8-inch-cobalt-4-flute","title":"Hertel E2041040 Square End Mill 5\/8 Inch Cobalt 4 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL E2041040 is a cobalt square end mill designed for metal removal in demanding milling applications. Built from M42 cobalt high-speed steel, it delivers heat resistance and edge retention when cutting ferrous metals, stainless steels, and high-temperature alloys. The cutter measures 0.625 inches in diameter with a 4-inch length of cut and an overall length of 6.125 inches, placing it in the extra-long reach category. Four spiral flutes with a 30-degree helix angle promote efficient chip evacuation and a smooth cutting action. The uncoated finish makes it straightforward to resharpen when edge life is exhausted.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for production and job-shop machining environments where extra-long reach is required to access deep pockets, slots, or stepped features. The centercutting geometry allows direct plunge entry without a pre-drilled hole, giving machinists flexibility in toolpath planning. Right-hand cut and right-hand flute configuration match standard CNC and manual vertical milling setups. The 0.625-inch shank diameter fits standard collet chucks, end mill holders, and Weldon-style tool holders commonly found in vertical machining centers and knee mills.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM42 cobalt construction for heat resistance and edge retention in tough materials\u003c\/li\u003e\n\u003cli\u003e4-inch length of cut provides extra-long reach for deep pockets and slots\u003c\/li\u003e\n\u003cli\u003e30-degree helix angle spiral flutes promote efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry allows direct plunge entry\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand flute for standard milling spindle compatibility\u003c\/li\u003e\n\u003cli\u003eUncoated finish simplifies resharpening\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or standard tooling selection for vertical machining centers, knee mills, and CNC milling machines accepting a 0.625-inch shank diameter in collet chucks, end mill holders, or Weldon-style tool holders.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully stopped and the tool holder is clean and free of chips before seating the shank. Verify runout with a dial indicator after mounting to minimize premature edge wear. Follow the machine manufacturer and tooling manufacturer guidelines for speeds, feeds, and depth of cut based on workpiece material.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 5\/8 inch (0.6250 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Cobalt (M42)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 5\/8 inch (0.6250 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 30 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\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\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Extra Long\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Uncoated\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: E2041040\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51754412867890,"sku":"E2041040","price":111.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7fe9d28d19024daecb2022197e199a49.jpg?v=1788945145","url":"https:\/\/voomisupply.com\/products\/hertel-e2041040-square-end-mill-5-8-inch-cobalt-4-flute","provider":"Voomi Supply","version":"1.0","type":"link"}