Cleveland C39625 HSS End Mill 0.375 in Dia 0.75 in Cut pneumatic accessory

Cleveland C39625 End Mill — Purpose

The Cleveland C39625 is a square-end high-speed-steel milling cutter with a .375 in diameter and .75 in length of cut, designed for general-purpose slotting and profiling in a pneumatic or powered spindle. Its Weldon flat shank locks securely in standard holders, making it a practical choice for machinists who need reliable material removal in steel, cast iron or non-ferrous alloys.

Fit for the job — and where to look elsewhere

This cutter suits operators running manual or CNC mills that accept a 3/8 in shank and can accommodate a 3-1/2 in overall length, especially when a TiCN coating is preferred for extended edge life in moderate-speed cuts. Shops that require longer reach, a different corner radius, carbide substrate for higher cutting speeds, or a necked design for deep-pocket work should select an alternative tool.

Behaviour under sustained load

The TiCN coating reduces friction and heat build-up during prolonged engagements, helping the high-speed-steel substrate retain hardness when the cutter remains in the cut for extended passes. Consistent chip evacuation through the straight flutes prevents packing, so the tool maintains dimensional accuracy and surface finish without the rapid edge degradation seen in uncoated HSS under the same conditions.