Allied Machine 455H-0223 Spade Drill Insert 2-23/32 in

Product Description

The ALLIED MACHINE AND ENGINEERING 455H-0223 is a cobalt spade drill insert designed for high-performance drilling in demanding industrial applications. Part of the GEN2 T-A series, this insert features a 144-degree point angle and an AM200 PVD coating classified as Super Cobalt grade. At 2-23/32 inches in diameter with a Seat Size 5 designation and a thickness of 0.4375 inches, it is built for precision boring in tough workpiece materials. Licensed machinists and tool-and-die professionals specify this insert when consistent hole geometry and extended tool life are required across production runs.

The 455H-0223 is suited for drilling operations in ferrous and non-ferrous metals, including steel, stainless steel, cast iron, superalloys, and titanium, as well as hard materials. It fits Seat Size 5 T-A style spade drill holders and is appropriate for CNC machining centers, radial arm drills, and horizontal boring mills where high-feed, high-torque drilling is standard practice. The GEN2 T-A series is designed for through-coolant and flood-coolant setups common in production-machining environments.

Key Features

• 2-23/32 inch diameter with Seat Size 5 for direct T-A holder compatibility
• 144-degree point angle optimized for reduced thrust and self-centering entry
• Super Cobalt insert material with AM200 PVD coating for heat and wear resistance
• Rated for primary workpiece material codes P, M, K, S, and H — covering steel, stainless steel, cast iron, superalloys, titanium, and hard materials
• GEN2 T-A series geometry engineered for high-feed production drilling
• Fractional inch system for straightforward holder and size matching

Compatibility

Designed for use with Seat Size 5 T-A style spade drill holders in the GEN2 T-A series. Compatible workpiece materials include steel, stainless steel, cast iron, superalloys, titanium, and hard materials per material codes P, M, K, S, and H.

Installation Notes

Installation and indexing of spade drill inserts should be performed by a qualified machinist or toolroom technician. Ensure the spindle is fully stopped and the machine is locked out before removing or seating the insert. Seat the insert flush and torque the retaining screw to the holder manufacturer specification using the correct T-A insert key — do not substitute fasteners. Inspect the insert seat and holder pocket for chips or debris before each installation to maintain proper seating and runout control.