Allied Machine and Engineering 454H-0204 Spade Drill Insert

Product Description

The ALLIED MACHINE AND ENGINEERING 454H-0204 is a cobalt spade drill insert designed for high-performance hole-making in demanding machining applications. Part of the GEN2 T-A series, this insert features a 132-degree point angle and a 2-1/8 inch diameter with a Seat Size 4 designation. It carries an AM200 PVD coating that extends tool life and reduces built-up edge when cutting through tough workpiece materials. At 0.3125 inches thick, the insert seats securely in compatible T-A style spade drill holders. This type of tooling is installed and managed by machinists and toolroom professionals in production and job-shop environments.

This insert is rated for use across multiple workpiece material categories including steel, stainless steel, cast iron, super-alloys and titanium, and hard materials. The GEN2 T-A series is a well-established platform for interchangeable spade drill systems, making this insert suitable for both roughing and through-hole operations in vertical machining centers, horizontal machining centers, and manual or CNC lathes with live tooling. It is particularly effective in applications where brazed or solid carbide drills are cost-prohibitive or impractical due to hole diameter range.

Key Features

• 2-1/8 inch diameter with Seat Size 4 for use in compatible GEN2 T-A series holders
• Cobalt substrate provides toughness and resistance to chipping in interrupted cuts
• 132-degree point angle reduces thrust and improves chip formation on entry
• AM200 PVD coating enhances wear resistance and thermal stability
• Rated for steel, stainless steel, cast iron, super-alloys, titanium, and hard materials
• 0.3125 inches insert thickness for stable seating in the holder pocket

Compatibility

Designed for use with ALLIED MACHINE AND ENGINEERING GEN2 T-A series spade drill holders accepting Seat Size 4 inserts at 2-1/8 inches diameter.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. The machine spindle must be fully stopped and the tool holder removed from the machine before seating or replacing the insert. Use the appropriate T-A insert key or wrench to secure the insert fastener to the holder pocket without over-torquing the seat screw. Inspect the holder pocket for chips, burrs, or wear before installing a new insert to ensure proper seating and runout.