{"product_id":"helical-solutions-82266-3-8-inch-4-flute-square-end-mill","title":"Helical Solutions 82266 3\/8 Inch 4 Flute Square End Mill","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HELICAL SOLUTIONS 82266 is a 4-flute solid carbide square end mill designed for cutting stainless steel and high-temperature alloys. It features a variable index (unequal flute spacing) geometry that reduces harmonic chatter during aggressive cuts, improving surface finish and tool life. The 3\/8-inch diameter cutting edge is paired with a matching 3\/8-inch straight cylindrical shank and a 1\/2-inch length of cut. Overall length is 2 inches. The Tplus coating adds wear resistance and heat tolerance, making this end mill well suited for the demanding material removal rates common in aerospace, medical, and industrial fabrication work.\u003c\/p\u003e\u003cp\u003eThis end mill is targeted at professional machinists and CNC operators running stainless steels, nickel alloys, titanium, and other difficult-to-machine high-temp materials. It is center-cutting, allowing plunge entry where required. The right-hand cut and right-hand helical flute direction are standard for conventional CNC milling setups. It is part of the Helical Solutions End Mills for Stainless and High Temp 4-Flute Square Variable Pitch series, built for shops that prioritize tool life and finish quality over commodity pricing.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eVariable index (unequal pitch) geometry reduces chatter and vibration in hard materials\u003c\/li\u003e\n\u003cli\u003eTplus coating improves heat and wear resistance for stainless and high-temp alloys\u003c\/li\u003e\n\u003cli\u003eCenter-cutting design allows direct plunge entry without pre-drilling\u003c\/li\u003e\n\u003cli\u003eSolid carbide construction provides rigidity and edge retention over high-speed steel\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, right-hand helical flutes for standard CNC spindle compatibility\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank fits standard ER and side-lock toolholders\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in CNC machining centers and manual mills equipped with standard 3\/8-inch toolholders. Optimized for stainless steel and high-temperature alloy applications per the HELICAL SOLUTIONS End Mills for Stainless and High Temp series designation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in an e-stop or locked-out state before changing tooling. Use a calibrated torque wrench and the appropriate collet or toolholder system when securing the shank to avoid runout. Confirm runout with a dial indicator before initiating cuts in production material.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.375 inches (3\/8 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.5 inches (1\/2 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.375 inches (3\/8 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\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 Helical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Cutting\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\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: End Mills for Stainless and High Temp 4 Flute Square Variable Pitch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.101 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: 82266\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HELICAL SOLUTIONS","offers":[{"title":"Default Title","offer_id":51731095060786,"sku":"82266","price":97.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/bba5ed852652fec5dad28eea4c05df45_e8affda4-bf28-43e4-a75b-4f3355617498.jpg?v=1788726875","url":"https:\/\/voomisupply.com\/products\/helical-solutions-82266-3-8-inch-4-flute-square-end-mill","provider":"Voomi Supply","version":"1.0","type":"link"}