Sgs 31257 Square End Mill 1/4 in 4 Flute Solid Carbide

Product Description

The SGS 31257 is a solid carbide square end mill designed for precision milling operations across a wide range of workpiece materials. It features a 1/4 inch cutting diameter, a 1/2 inch length of cut, and a 4-flute configuration with a 30-degree right-hand helix. The AlTiN coating improves heat resistance and extends tool life in demanding cutting conditions. Micrograin carbide construction provides the hardness and rigidity required for consistent performance in ferrous and non-ferrous materials. This tool is intended for use by machinists and toolroom professionals working with CNC mills, manual knee mills, and machining centers.

The SGS 31257 is suited for slotting, profiling, and finishing cuts in a stub-length setup where rigidity is a priority. It carries a straight cylindrical shank with a 1/4 inch shank diameter, making it compatible with standard collet chucks and end mill holders of that bore size. The variable index geometry helps reduce harmonic vibration during the cut. Primary workpiece material codes supported include H, K, M, N, P, and S, covering hardened steels, cast iron, stainless steel, non-ferrous metals, steel alloys, and high-temperature alloys.

Key Features

• AlTiN coating for elevated heat resistance and extended tool life
• Micrograin solid carbide substrate for hardness and edge retention
• 30-degree right-hand helix for efficient chip evacuation
• Variable index flute spacing reduces chatter and vibration
• Centercutting design allows plunge entry
• Stub length configuration maximizes rigidity in tight setups

Compatibility

Designed for use with standard 1/4 inch collet chucks and end mill holders on CNC machining centers and manual mills. Compatible with workpiece material codes H, K, M, N, P, and S as specified by the manufacturer.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines. Secure the shank fully within the collet or end mill holder to the recommended engagement depth before tightening. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Verify runout with a dial indicator after installation to confirm proper seating.