Htc 120-4250 Square End Mill 1/4 in 4 Flute Solid Carbide

Product Description

The HTC 120-4250 is a solid carbide square end mill designed for precision milling operations in metal, composites, and engineered materials. With a 1/4 inch cutting diameter and 4 helical flutes, this single-end tool delivers clean, square-shouldered cuts in a wide range of machining applications. The bright, uncoated finish makes it well suited for materials where coated tools are not required or preferred. At 2.5 inches overall length with a 3/4 inch length of cut, this is a standard-reach tool built for stability in light-to-medium milling passes. It is typically installed and operated by machinists and CNC programmers working in job shop, production, or maintenance machining environments.

This end mill is used in vertical and horizontal milling operations including slotting, profiling, and peripheral milling. The right-hand cut and right-hand helical flute geometry are standard for conventional and climb milling on CNC machining centers and manual mills. The 1/4 inch shank diameter fits standard collets and end mill holders common to benchtop and full-size CNC platforms. It is part of the HTC Series 120 product line, targeting general-purpose solid carbide tooling applications.

Key Features

• Solid carbide construction for rigidity and wear resistance in demanding cuts
• 4 helical flutes with right-hand cut and right-hand flute direction
• 3/4 inch length of cut suitable for standard-depth slotting and profiling
• Bright, uncoated finish for compatibility with a broad range of work materials
• 1/4 inch square shank for secure seating in collets and end mill holders
• Single-end design; Series 120 standard length configuration

Compatibility

Designed as a standard-fit replacement or new-install square end mill for 1/4 inch collets and end mill holders on CNC machining centers and manual vertical mills. No specific machine model compatibility was provided in the product data.

Installation Notes

Installation is performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the shank fully and evenly in the collet or holder and torque the drawbar or collet nut to the tool holder manufacturer specification. This tool is not centercutting and should not be plunged axially into solid material; use a ramping or helical interpolation entry strategy instead.