{"product_id":"seco-03115930-square-end-mill-1-8-in-6-flute-carbide-altin","title":"Seco 03115930 Square End Mill 1\/8 in 6 Flute Carbide Altin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SECO 03115930 is a 6-flute solid carbide square end mill engineered for demanding milling applications where precision and tool life are critical. It carries a 1\/8-inch cutting diameter with a 5\/16-inch length of cut and mounts on a 1\/4-inch straight-cylindrical shank. The overall length is 2 inches, placing it in the long-series category. The micrograin carbide substrate is coated with AlTiN (aluminum titanium nitride), which delivers high heat resistance and hardness at the cutting edge. A variable helix design reduces chatter and improves chip evacuation. Licensed machinists and CNC operators working in job shops, production floors, and tool rooms are the primary users.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for finish and semi-finish milling operations in ferrous and hardened materials where a small-diameter, long-reach tool is needed. The centercutting geometry allows plunge entry, expanding its use in slotting and pocketing operations. Right-hand cut and right-hand flute configuration are standard for conventional CNC spindle setups. The Series S638 designation identifies it within the SECO long-series end mill family, optimized for reach without sacrificing rigidity at this diameter.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e6-flute geometry increases feed rates and improves surface finish compared to lower flute counts\u003c\/li\u003e\n\u003cli\u003eAlTiN coating provides elevated heat and wear resistance for hard and abrasive materials\u003c\/li\u003e\n\u003cli\u003eVariable helix reduces harmonic vibration and chatter during cut\u003c\/li\u003e\n\u003cli\u003eCentercutting design permits direct plunge milling without a pre-drilled entry hole\u003c\/li\u003e\n\u003cli\u003eMicrograin solid carbide substrate delivers consistent edge sharpness and toughness\u003c\/li\u003e\n\u003cli\u003eLong-series configuration provides extended reach for deep pockets and stepped features\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit replacement for 1\/4-inch straight-shank collet chucks and end mill holders used in CNC machining centers and manual mills; verify runout tolerance and holder condition before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstall in a properly sized 1\/4-inch precision collet or end mill holder; confirm holder cleanliness and condition before seating the tool. Spindle and axis drives must be fully de-energized and locked out before tool changes. Apply recommended torque to the drawbar or set screw per machine manufacturer specifications. Verify tool runout with a dial indicator after installation before beginning the cut to ensure it falls within the mill diameter tolerance of +0.000 to -0.002 inches.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.125 inches (1\/8 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000 to -0.002 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.3125 inches (5\/16 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.250 inches (1\/4 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: -0.0001 to -0.0004 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length Tolerance\u003c\/strong\u003e: +0.060 \/ -0.060 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Single End\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide, Micrograin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: AlTiN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Long Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Helix\u003c\/strong\u003e: Yes\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\u003eSeries\u003c\/strong\u003e: S638\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112803\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Weight\u003c\/strong\u003e: 0.06 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: SECO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 03115930\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SECO TOOLS","offers":[{"title":"Default Title","offer_id":51561572630834,"sku":"03115930","price":98.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c9e60b8dd76ed78d0de80234cc8705d8_090861bc-dce2-4d5c-8726-63802ee5e994.jpg?v=1786465822","url":"https:\/\/voomisupply.com\/products\/seco-03115930-square-end-mill-1-8-in-6-flute-carbide-altin","provider":"Voomi Supply","version":"1.0","type":"link"}