{"product_id":"hertel-gg99914281-square-end-mill-5-8-in-4-flute-hss","title":"Hertel GG99914281 Square End Mill 5\/8 in 4 Flute Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL GG99914281 is a square end mill designed for general-purpose milling operations in metal fabrication, tool rooms, and machining centers. Manufactured from M7 high speed steel with a bright, uncoated finish, it features a 5\/8 inch diameter cutting face, four flutes, and a 30-degree right-hand helix angle. The 4 inch length of cut and 6.125 inch overall length make it well suited for moderate-depth slotting, profiling, and peripheral milling. Its centercutting geometry allows plunge entry as well as conventional side cutting. This end mill is installed and used by machinists, tool-and-die technicians, and CNC machine operators working with steel, cast iron, and similar ferrous materials.\u003c\/p\u003e\u003cp\u003eThis end mill is intended for use in vertical milling machines, knee mills, and CNC machining centers performing slotting, profiling, and pocket milling operations. The spiral flute design and 30-degree helix promote efficient chip evacuation during cuts in ferrous metals. The regular length classification makes it a standard replacement or stocking item for general shop applications where extended reach tooling is not required. The 5\/8 inch shank diameter matches standard collet and end mill holder sizes common in both manual and CNC setups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM7 high speed steel construction for toughness and wear resistance in ferrous metal cutting\u003c\/li\u003e\n\u003cli\u003eFour-flute, right-hand spiral design for efficient chip clearance and smooth surface finish\u003c\/li\u003e\n\u003cli\u003e30-degree helix angle balances cutting pressure and chip evacuation in slotting and profiling\u003c\/li\u003e\n\u003cli\u003eCentercutting capable, allowing direct plunge entry without a pre-drilled hole\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish suitable for general-purpose use and regrinding\u003c\/li\u003e\n\u003cli\u003eRegular length classification with 4 inch length of cut for standard depth milling applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or stocking end mill for standard 5\/8 inch collets, end mill holders, and Weldon-style holders used in vertical milling machines and CNC machining centers.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a machinist or CNC operator using an appropriate collet chuck or end mill holder rated for the 5\/8 inch shank diameter. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify runout with a dial indicator after seating the tool in the holder to confirm proper concentricity before cutting. Follow applicable shop safety practices and machine manufacturer guidelines for tooling installation and operating speeds.\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: High Speed Steel, Grade M7\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\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\u003eChipbreaker\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Bright, Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Regular\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: GG99914281\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51747555180850,"sku":"GG99914281","price":90.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9b6fe7a5dbe0a5bdb7997d3e8371e362.jpg?v=1788882493","url":"https:\/\/voomisupply.com\/products\/hertel-gg99914281-square-end-mill-5-8-in-4-flute-hss","provider":"Voomi Supply","version":"1.0","type":"link"}