{"product_id":"helical-solutions-46391-square-end-mill-1-2-in-3-flute-carbide","title":"Helical Solutions 46391 Square End Mill 1\/2 in 3 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HELICAL SOLUTIONS 46391 is a 3-flute solid carbide square end mill engineered for high-performance milling of aluminum and non-ferrous materials. It features a 1\/2 inch cutting diameter, a 5\/8 inch length of cut, and a 40-degree helix angle that promotes efficient chip evacuation in gummy, low-iron alloys. A Zplus ZrN (zirconium nitride) coating reduces built-up edge and extends tool life in non-ferrous applications. The variable index flute spacing minimizes chatter and improves surface finish at elevated feed rates. This is a single-end, right-hand cut tool with a straight 1\/2 inch shank and an extended reach neck measuring 4.25 inches from the shank shoulder to the cutting edge.\u003c\/p\u003e\u003cp\u003eThe 46391 is suited for CNC machining centers running aluminum billet, plate, extrusion, and cast non-ferrous workpieces in job shop, production, and aerospace environments. The extended reach design allows clearance in deep-pocket and tall-wall operations where a standard-length end mill would not reach without interference. The centercutting geometry supports plunge entry, ramping, and helical interpolation. It is appropriate for both roughing and finishing passes in aluminum when paired with appropriate spindle speeds and chip loads for solid carbide tooling.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide substrate provides rigidity and wear resistance in non-ferrous milling\u003c\/li\u003e\n\u003cli\u003eZplus ZrN coating reduces adhesion and built-up edge on aluminum workpieces\u003c\/li\u003e\n\u003cli\u003e40-degree right-hand helix angle promotes rapid chip evacuation from the flutes\u003c\/li\u003e\n\u003cli\u003eVariable index flute spacing reduces harmonic chatter at aggressive feed rates\u003c\/li\u003e\n\u003cli\u003eExtended reach neck at 4.25 inches enables deep-pocket and tall-wall clearance\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry supports plunge, ramp, and helical interpolation entry\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use on CNC machining centers with ISO or CAT\/BT\/HSK toolholding systems accepting a 1\/2 inch straight shank. Primary workpiece material designation is N (aluminum and non-ferrous). Part of the Helical Solutions End Mills for Aluminum series: 3 Flute, Square, 40 degree Helix, Variable Pitch, Reduced Neck.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified CNC machinist or toolroom technician. Secure the straight shank in a collet chuck or end mill holder tightened to the toolholder manufacturer's specification — do not use a set-screw side-lock holder, as it can damage the shank or induce runout on a reduced-neck tool. Verify runout at the cutting tip before production to protect the variable-index geometry. Always confirm spindle speed, feed rate, and axial depth of cut against the manufacturer's published cutting data for this series before running the first part.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.5000 inches (1\/2 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.6250 inches (5\/8 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.5000 inches (1\/2 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6.0000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReach Length\u003c\/strong\u003e: 4.2500 inches (4-1\/4 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 40 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Zplus ZrN (Zirconium Nitride)\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\u003eFlute Type\u003c\/strong\u003e: Helical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Index\u003c\/strong\u003e: Yes\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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Aluminum and Non-Ferrous (Code: N)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Fractional Inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.529 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: 46391\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HELICAL SOLUTIONS","offers":[{"title":"Default Title","offer_id":51727817572658,"sku":"46391","price":213.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e58b1abe7386f46ee075bf69be3ec513.jpg?v=1788682948","url":"https:\/\/voomisupply.com\/products\/helical-solutions-46391-square-end-mill-1-2-in-3-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}