Htc 120-4375 Square End Mill 3/8 in 4 Flute Solid Carbide

Product Description

The HTC 120-4375 is a solid carbide square end mill designed for precision milling operations in metal, composites, and other hard materials. With a 3/8 inch mill diameter and 4 helical flutes, it delivers clean, square-shoulder cuts in a right-hand cutting direction. The 1 inch length of cut and 2.5 inch overall length make it well suited for standard-depth slotting, profiling, and peripheral milling. The bright, uncoated finish is appropriate for general-purpose applications where coatings are not required. This tool is a Series 120 single-end mill with a square shank, intended for use by machinists and tool-and-die professionals in CNC and manual milling setups.

The 120-4375 fits standard milling applications in job shops, maintenance machining, and production environments. The 3/8 inch shank diameter seats directly into collet chucks, end mill holders, and Weldon-style tool holders commonly found on vertical mills and machining centers. It is a standard-length tool, not extended reach, making it appropriate for setups where rigidity and reduced deflection are priorities. The right-hand flute direction and helical flute geometry support efficient chip evacuation in typical ferrous and non-ferrous milling operations.

Key Features

• Solid carbide construction for hardness and wear resistance in demanding milling applications
• 4 helical flutes with right-hand cutting and right-hand flute direction for efficient chip removal
• 3/8 inch mill diameter with matching 3/8 inch square shank for direct collet or end mill holder mounting
• 1 inch length of cut suitable for standard-depth slotting and profiling passes
• Bright, uncoated finish for general-purpose use across a range of workpiece materials
• Non-centercutting design - not intended for plunge cutting; use for peripheral and slot milling only

Compatibility

Designed as an OEM-style solid carbide square end mill for use in standard 3/8 inch collet chucks, Weldon-style end mill holders, and compatible milling tool holders on CNC machining centers and manual vertical mills.

Installation Notes

Installation should be performed by a qualified machinist following shop safety protocols. Ensure the spindle is fully stopped and the machine is powered down or in a safe state before changing tooling. Seat the shank fully into the tool holder and tighten to the holder manufacturer's specified torque using the appropriate wrench - do not overtighten or use makeshift tools. Verify runout with a dial indicator before beginning a cut, particularly in tight-tolerance applications.