Allied 4C20P-13.5 Spade Drill Insert 13.5mm Carbide GEN2

Product Description

The ALLIED MACHINE AND ENGINEERING 4C20P-13.5 is a solid carbide spade drill insert designed for high-performance drilling in demanding workpiece materials. Sized at 13.5 mm (17/32 inch) in diameter with a 132-degree point angle, this insert belongs to the GEN2 T-A series and carries an AM300 PVD coating for extended tool life and heat resistance. The C2 (K20) carbide grade provides a balance of hardness and toughness suited to interrupted cuts and abrasive materials. Installation is straightforward into a compatible Seat Size 0 T-A spade drill holder. This insert is specified and installed by machinists and CNC operators in production and job shop environments.

The 4C20P-13.5 is rated for drilling stainless steel, cast iron, non-ferrous metals, and super-alloys including titanium, making it a versatile choice across aerospace, automotive, and general manufacturing applications. The GEN2 T-A platform is a widely adopted indexable spade drill system, and this insert is a direct replacement component for that holder system. It is suitable for use on CNC machining centers, lathes with live tooling, and manual or CNC drill presses where a Seat Size 0 holder is already in service.

Key Features

• 13.5 mm (17/32 inch) cutting diameter with Seat Size 0 fitment
• 132-degree point angle for reduced thrust and improved chip formation
• Solid carbide construction in C2 (K20) grade for hardness and edge retention
• AM300 PVD coating provides thermal protection and wear resistance
• Compatible with stainless steel, cast iron, non-ferrous metals, super-alloys, and titanium workpieces
• GEN2 T-A series platform for quick indexing and consistent tool geometry

Compatibility

Designed for use with ALLIED MACHINE AND ENGINEERING GEN2 T-A series Seat Size 0 spade drill holders. Specific holder compatibility should be confirmed against the Allied T-A tooling catalog before ordering.

Installation Notes

Installation of this insert should be performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully stopped and locked out before indexing or replacing the insert. Seat and clamping surfaces on the holder should be cleaned of chips and debris before seating the new insert. Follow the holder manufacturer torque specifications for the clamping screw as outlined in the Allied T-A tooling documentation.