{"product_id":"helical-solutions-81940-square-end-mill-1-2-in-7-flute-carbide","title":"Helical Solutions 81940 Square End Mill 1\/2 in 7 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HELICAL SOLUTIONS 81940 is a 7-flute solid carbide square end mill designed for high-performance milling in demanding metalworking and machining applications. It features a 1\/2 inch mill diameter, a 2 inch length of cut, and a 4 inch overall length with a matching 1\/2 inch straight cylindrical shank. The Tplus coating enhances wear resistance and thermal stability during aggressive cutting operations. Variable index flute spacing reduces harmonic vibration at the spindle, improving surface finish and tool life. This end mill is a single-end tool with right-hand cutting and right-hand helical flutes.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for milling operations in ferrous and non-ferrous materials on CNC machining centers and manual knee mills. The 7-flute geometry and Tplus coating make it particularly effective for finishing and semi-finishing passes where high material removal rates and surface quality are priorities. It is installed and operated by machinists, toolroom technicians, and CNC programmers in job shops, production facilities, and aerospace or mold-and-die environments. Note that this tool is not center-cutting and is not intended for direct plunge entry.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e7-flute design increases feed rates and improves surface finish compared to lower flute-count tools\u003c\/li\u003e\n\u003cli\u003eVariable index flute spacing reduces chatter and vibration during cutting\u003c\/li\u003e\n\u003cli\u003eTplus coating provides enhanced wear resistance and extended tool life in ferrous materials\u003c\/li\u003e\n\u003cli\u003eSolid carbide construction delivers rigidity and heat resistance under high cutting loads\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, right-hand helical flute geometry for standard CNC spindle compatibility\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank fits standard ER collets and end mill holders\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in CNC machining centers and manual mills accepting a 1\/2 inch straight shank end mill via ER collet chuck, side-lock holder, or shrink-fit toolholder. Not center-cutting — plunge milling requires a pre-drilled pilot hole or ramping entry strategy.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tool is installed by qualified machinists or CNC operators. Ensure the spindle is fully stopped and the machine is in an energy-isolated state before changing tooling. Verify collet or holder runout is within acceptable limits before use, as excessive runout accelerates wear on a 7-flute tool. Do not use this end mill for direct plunge cuts, as it is not center-cutting.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 7\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: Tplus\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-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Index\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Single End\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.344 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112803\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: 81940\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HELICAL SOLUTIONS","offers":[{"title":"Default Title","offer_id":51727235645746,"sku":"81940","price":210.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2bc1734fc838c00a6bcbd7f3c129e773.jpg?v=1788675160","url":"https:\/\/voomisupply.com\/products\/helical-solutions-81940-square-end-mill-1-2-in-7-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}