Seco 03115930 Square End Mill 1/8 in 6 Flute Carbide Altin

Product Description

The 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.

This 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.

Key Features

• 6-flute geometry increases feed rates and improves surface finish compared to lower flute counts
• AlTiN coating provides elevated heat and wear resistance for hard and abrasive materials
• Variable helix reduces harmonic vibration and chatter during cut
• Centercutting design permits direct plunge milling without a pre-drilled entry hole
• Micrograin solid carbide substrate delivers consistent edge sharpness and toughness
• Long-series configuration provides extended reach for deep pockets and stepped features

Compatibility

Designed 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.

Installation Notes

Install 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.