{"product_id":"hertel-62913918-roughing-end-mill-7-8-in-5-flute-cobalt","title":"Hertel 62913918 Roughing End Mill 7\/8 in 5 Flute Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 62913918 is a single-end roughing end mill designed for aggressive material removal in milling operations. Built from M42 cobalt high-speed steel with a TiAlN coating, it handles tough ferrous and stainless materials at elevated cutting temperatures. The 7\/8 inch (0.8750 inch) cutting diameter pairs with a 3\/4 inch shank diameter and a 1-7\/8 inch length of cut, giving machinists a rigid, capable tool for hogging operations. With five flutes in a fine-pitch spiral configuration, this mill produces a corrugated chip-breaking cut that reduces cutting forces and heat buildup. It is installed and operated by CNC machinists and manual mill operators in job shop and production environments.\u003c\/p\u003e\u003cp\u003eThis roughing end mill is suited for roughing passes on ferrous metals, alloy steels, and stainless steels where stock removal rate is the priority. The fine-pitch, five-flute geometry reduces chatter in stable fixturing setups. Right-hand cut and right-hand flute direction make it compatible with standard spindle rotation on vertical and horizontal milling machines. The TiAlN coating extends tool life in dry or minimal-lubrication cutting conditions. It is a single-end tool, so once the cutting end is worn, the tool is replaced rather than indexed.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM42 cobalt HSS construction for heat and wear resistance in tough materials\u003c\/li\u003e\n\u003cli\u003eTiAlN coating supports dry cutting and extends tool life at elevated temperatures\u003c\/li\u003e\n\u003cli\u003eFive-flute fine-pitch geometry for high material removal with reduced cutting forces\u003c\/li\u003e\n\u003cli\u003e7\/8 inch cutting diameter with 3\/4 inch shank for rigid, low-runout mounting\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, right-hand spiral flute direction for standard spindle compatibility\u003c\/li\u003e\n\u003cli\u003eNon-centercutting design — requires a pre-drilled hole or ramping entry\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-use roughing end mill for standard 3\/4 inch collet chucks, end mill holders, and milling machine spindles accepting a 3\/4 inch shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a machinist or toolroom technician. Power down and lock out the spindle before loading or unloading the tool. Seat the 3\/4 inch shank fully into the holder and tighten to the tool holder manufacturer's specified torque range. This tool is non-centercutting and cannot plunge directly into solid material — use a pre-drilled entry point or a ramping toolpath.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter (Fractional)\u003c\/strong\u003e: 7\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter (Decimal)\u003c\/strong\u003e: 0.8750 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 5\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\u003eMaterial Grade\u003c\/strong\u003e: M42\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiAlN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1-7\/8 inches (1.8750 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/4 inch (0.7500 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4-1\/8 inches (4.1250 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePitch\u003c\/strong\u003e: Fine\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\u003eEnd Type\u003c\/strong\u003e: Single End\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: No\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: 0.5 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: 62913918\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51731806388530,"sku":"62913918","price":134.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/64659888143b8680dee2cf98a6dbc4a3.jpg?v=1788735138","url":"https:\/\/voomisupply.com\/products\/hertel-62913918-roughing-end-mill-7-8-in-5-flute-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}