Htc 200-4125 Square End Mill 1/8 in 4 Flute Solid Carbide

Product Description

The HTC 200-4125 is a double-end, four-flute square end mill designed for precision milling in metalworking and machining applications. Built from solid carbide and coated with AlTiN (aluminum titanium nitride), it handles high-temperature cutting conditions common in ferrous and hard-alloy materials. The mill measures 0.125 inches in diameter with a 0.25-inch length of cut and a 1.5-inch overall length. Its stub-length profile provides rigidity in tight setups where overhang must be minimized. Right-hand cutting and right-hand helical flutes are standard on this series.

The 200-4125 is suited for milling slots, pockets, and profiles in CNC machining centers and manual mills where a small-diameter, high-performance tool is required. The double-end design extends tool life by providing a second usable cutting end. The Series 200 stub configuration is a common choice for jobs requiring maximum stiffness at small diameters, particularly in production environments machining steel, stainless, or hardened alloys. It is used by machinists, tool-and-die technicians, and CNC operators across job shop and production settings.

Key Features

• Solid carbide construction for hardness and wear resistance in demanding cuts
• AlTiN coating provides heat resistance and extended tool life at high cutting speeds
• Double-end design offers two cutting ends per tool, reducing per-edge cost
• Four helical flutes with right-hand cutting direction for smooth chip evacuation
• Stub-length profile maximizes rigidity and minimizes deflection at 0.125-inch diameter
• Square shank, 0.125-inch diameter for standard collet and end mill holder compatibility

Compatibility

Designed as an OEM-style replacement and standard tooling option for CNC machining centers and manual mills accepting 1/8-inch shank end mills with standard collet or end mill holder tooling systems.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and locked out before changing tooling. Seat the shank fully into the collet or holder to the recommended gauge length before torquing the retention nut. Do not use this tool for plunge cutting, as this end mill is non-centercutting.