Allied Machine 455H-0220 Spade Drill Insert 2-5/8 in Cobalt

Product Description

The ALLIED MACHINE AND ENGINEERING 455H-0220 is a cobalt spade drill insert designed for high-performance hole-making in demanding industrial and machining applications. This insert measures 2-5/8 inches in diameter and seats in a Size 5 holder. It features a 144-degree point angle and is finished with an AM200 PVD coating for extended tool life. Manufactured as part of the GEN2 T-A series, this insert is built for rigorous production environments where consistent bore quality and insert durability are critical. Typical users include machinists, toolroom technicians, and production drilling operators working with industrial drilling equipment.

This spade drill insert is suited for drilling operations in steel, stainless steel, cast iron, super-alloys, titanium, and hard materials. The GEN2 T-A series is commonly used in CNC machining centers and large drill press setups where spade-style tooling is preferred for deep-hole or large-diameter drilling. The AM200 PVD coating improves heat resistance and wear performance across these material groups, making this insert a practical choice for shops running mixed-material production.

Key Features

• 2-5/8 inch diameter fits Size 5 spade drill holders in the GEN2 T-A series
• 144-degree point angle optimized for clean entry and chip control
• Cobalt substrate provides toughness and heat resistance in hard and abrasive materials
• AM200 PVD coating extends insert life in steel, stainless steel, cast iron, super-alloys, titanium, and hard material applications
• 0.4375-inch insert thickness for secure seating and rigidity under load
• Sold individually — single-insert packaging for flexible inventory management

Compatibility

Designed for use with GEN2 T-A series Size 5 spade drill holders. Compatible with primary workpiece materials classified as P (Steel), M (Stainless Steel), K (Cast Iron), S (Super-alloys and Titanium), and H (Hard Material).

Installation Notes

Installation of spade drill inserts should be performed by qualified machinists following the toolholder manufacturer's seating and torque guidelines. Power down and lock out the machine before replacing or inspecting inserts. Inspect the holder seat for wear or debris before seating the new insert, as a damaged seat will affect bore accuracy and insert retention. Follow all applicable shop safety and machine guarding protocols during changeover.