Allied Machine 451H-0025 Spade Drill Insert 25/32 in Cobalt

Product Description

The ALLIED MACHINE AND ENGINEERING 451H-0025 is a cobalt spade drill insert designed for high-performance hole-making in demanding metalworking applications. It features a 25/32 inch diameter, a 132-degree point angle, and an AM200 PVD coating applied to the cobalt substrate. The GEN2 T-A series design seats into a Seat Size 1 holder and is engineered to maintain cutting edge integrity under the thermal and mechanical loads common in production drilling. Machinists and CNC operators working in job shops or manufacturing facilities install this insert as the cutting element of a spade drill body assembly.

This insert is suited for drilling steel, stainless steel, cast iron, super-alloys, titanium, and hard materials, covering ISO material groups P, M, K, S, and H. It is a strong fit for production environments that require consistent hole geometry across high-volume runs. The GEN2 T-A series is a widely recognized platform in industrial drilling, and this insert slots into compatible Seat Size 1 T-A bodies used in vertical machining centers, horizontal boring mills, and CNC lathes with live tooling.

Key Features

• 25/32 inch diameter cobalt insert for precision spade drilling
• 132-degree point angle for controlled entry and reduced thrust in common workpiece materials
• AM200 PVD coating for improved wear resistance and heat management at the cutting edge
• Compatible with GEN2 T-A Seat Size 1 spade drill bodies
• Rated for steel, stainless steel, cast iron, super-alloys, titanium, and hard materials
• Sold individually — package quantity of 1

Compatibility

Designed for use with GEN2 T-A series spade drill bodies accepting a Seat Size 1 insert. Verify holder seat size and series designation before installation to confirm proper fit.

Installation Notes

Installation is performed by a machinist or tooling technician. Ensure the machine spindle is fully stopped and locked out before seating or removing the insert. Use the manufacturer-specified torx or hex key to secure the insert clamp screw to the holder body — do not overtighten or use impact drivers on the clamp fastener. Inspect the insert seat for chips or debris before installation to ensure full seating and accurate tool geometry.