Widia 5576518 Square End Mill 1/2 in 4 Flute Solid Carbide

Product Description

The WIDIA 5576518 is a solid carbide square end mill designed for high-performance milling in demanding metal-cutting applications. With a 0.5 inch mill diameter, 4 helical flutes, and a 38-degree helix angle, this single-end tool delivers efficient chip evacuation and stable cutting action. The AlTiN (WP15PE) coating provides thermal resistance and hardness retention at elevated cutting temperatures, extending tool life in abrasive and hard materials. It is intended for use by machinists and tool-and-die professionals operating CNC milling centers and manual knee mills where consistent finish and dimensional accuracy are required.

This end mill is suited for slotting, profiling, and peripheral milling in steel, stainless steel, cast iron, high-temperature alloys, and hardened materials. The Weldon flat shank provides positive drive and minimizes pullout in high-feed applications. With a 1 inch length of cut, 1 inch neck length, and 3 inch overall length, this tool fits standard tool holders designed for 1/2 inch shank diameters. It is a right-hand cut, right-hand flute configuration with no chipbreaker and no coolant-through capability, making it straightforward to apply in conventional dry or minimal-quantity lubrication setups.

Key Features

• 0.5 inch mill diameter with 1 inch length of cut for standard slotting and profiling depth
• 4 helical flutes at a 38-degree helix angle for smooth chip flow and reduced cutting forces
• Solid carbide construction for rigidity and wear resistance in ferrous and hard materials
• AlTiN coating (WP15PE grade) for high-temperature performance in steel, stainless steel, and high-temp alloys
• Weldon flat shank prevents pullout under aggressive feed rates
• Centercutting geometry enables direct plunge entry without a pre-drilled pilot hole
• Series 4V05 regular-length configuration for consistent reach in standard setups

Compatibility

Rated for primary workpiece materials including steel, stainless steel, cast iron, high-temperature alloys, and hardened materials (ISO material codes P, M, K, S, H). Designed for use with 1/2 inch Weldon-style tool holders on CNC machining centers and manual milling machines.

Installation Notes

This end mill is installed by machinists using a compatible 1/2 inch Weldon flat tool holder; ensure the set screw engages the flat fully before tightening to prevent axial pullout. Verify spindle speed and feed rate against the material and coating manufacturer guidelines before cutting. Inspect the tool holder bore and collet for runout before securing the tool, as excessive runout reduces tool life and surface finish quality. Follow machine manufacturer lockout and tag-out procedures before loading or changing tooling.