{"product_id":"helical-solutions-01255-square-end-mill-5-16-in-3-flute-carbide","title":"Helical Solutions 01255 Square End Mill 5\/16 in 3 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HELICAL SOLUTIONS 01255 is a 3-flute solid carbide square end mill designed for high-performance milling in aluminum and non-ferrous materials. It measures 5\/16 inch (0.3125 inches) in diameter with a 5\/8-inch length of cut and a 2-1\/2-inch overall length. The 35-degree right-hand helical flute geometry promotes efficient chip evacuation and reduces built-up edge when cutting aluminum. The bright, uncoated finish is suited for applications where coating interaction with aluminum is a concern. Licensed machinists and CNC operators in job shops, aerospace fabrication, and general manufacturing regularly specify this geometry for finish milling and slotting aluminum workpieces.\u003c\/p\u003e\u003cp\u003eThis end mill is part of the HELICAL SOLUTIONS End Mills for Aluminum - 3 Flute - Square - 35 Degree Helix series. It is configured for right-hand cutting with a straight-cylindrical shank, making it compatible with standard ER collet chucks and side-lock holders that accept a 5\/16-inch shank. The centercutting design allows for plunge entry, expanding its utility in pocketing and full-slot operations on CNC machining centers and manual knee mills.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e5\/16-inch (0.3125-inch) cutting diameter with matching 5\/16-inch straight-cylindrical shank\u003c\/li\u003e\n\u003cli\u003e3-flute, 35-degree right-hand helix optimized for aluminum chip evacuation\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry allows direct plunge entry for pocketing operations\u003c\/li\u003e\n\u003cli\u003eSolid carbide construction for rigidity and wear resistance in non-ferrous cutting\u003c\/li\u003e\n\u003cli\u003eBright\/uncoated finish — no coating buildup risk when machining aluminum\u003c\/li\u003e\n\u003cli\u003eStandard 2-1\/2-inch overall length suits most general-purpose reach requirements\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit replacement for 5\/16-inch square end mills in ER collet chucks, milling chucks, and side-lock tool holders with a 5\/16-inch bore. Intended for aluminum and non-ferrous milling applications on CNC machining centers and manual vertical mills.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Clean the collet bore and shank of debris before seating; torque the collet nut to the tool holder manufacturer's specification. Verify runout with a dial indicator after installation and before beginning a cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.3125 inches (5\/16 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.625 inches (5\/8 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches (2-1\/2 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3125 inches (5\/16 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 35 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Helical\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\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Helix\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Index\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\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.086 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: HELICAL SOLUTIONS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 01255\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HELICAL SOLUTIONS","offers":[{"title":"Default Title","offer_id":51731690160434,"sku":"01255","price":59.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f843574a6391e06f87b103ec90887d44_ea54b820-06c2-4c76-a5ca-fdc541386195.jpg?v=1788733924","url":"https:\/\/voomisupply.com\/products\/helical-solutions-01255-square-end-mill-5-16-in-3-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}