Allied Machine 456H-0302 Spade Drill Insert 3-1/16 in Cobalt

Product Description

The ALLIED MACHINE AND ENGINEERING 456H-0302 is a cobalt spade drill insert designed for high-performance hole-making in demanding industrial drilling applications. With a 3-1/16 inch diameter and a 144-degree point angle, this insert seats into a Size 6 holder and delivers consistent cutting geometry on difficult materials. The AM200 PVD coating improves wear resistance and extends tool life at elevated cutting temperatures. At 0.4375 inches thick, the insert maintains rigidity under heavy feed rates. Machinists and tool-and-die professionals install this insert in GEN2 T-A spade drill bodies for production drilling operations.

This insert is suited for drilling steel, stainless steel, cast iron, super-alloys, titanium, and hard materials. It fits within the GEN2 T-A series platform and is appropriate for CNC machining centers, lathes, and drill presses where consistent hole quality and extended insert life are required. The AM200 PVD coating is particularly effective when cutting ISO material groups P, M, K, S, and H, making this insert a versatile choice across a broad range of workpiece materials in both production and job-shop environments.

Key Features

• 3-1/16 inch diameter with 144-degree point angle for aggressive, stable entry geometry
• Cobalt substrate provides toughness and heat resistance in hard and abrasive materials
• AM200 PVD coating improves wear resistance and reduces built-up edge on difficult alloys
• Size 6 seat ensures positive, repeatable insert indexing in GEN2 T-A drill bodies
• Compatible with ISO material groups P, M, K, S, and H
• 0.4375 inch insert thickness supports rigidity under high feed and interrupted-cut conditions

Compatibility

Designed for use with GEN2 T-A series spade drill holders, Seat Size 6. Compatible with primary workpiece materials classified as Steel, Stainless Steel, Cast Iron, Super-alloys and Titanium, and Hard Material (ISO codes P, M, K, S, H).

Installation Notes

This insert is installed and indexed by a qualified machinist or tooling technician. The drill body should be fully secured in the spindle and the machine powered down before inserting or removing the spade drill insert. Use the appropriate insert screw and torque driver specified by the drill body manufacturer to seat the insert correctly. Improper seating can cause insert movement, poor hole quality, or insert breakage during cutting.