Allied Machine 15ZN-.484 Spade Drill Insert 31/64 in Cobalt

Product Description

The ALLIED MACHINE AND ENGINEERING 15ZN-.484 is a spade drill insert designed for high-performance hole-making in demanding metal-cutting applications. Part of the T-A series, this insert measures 31/64 inches in diameter and seats in a size Z holder. It is manufactured from cobalt high-speed steel at material grade T15 and features a TiCN physical vapor deposition (PVD) coating for improved surface hardness and wear resistance. The 132-degree point angle suits flat-bottom and through-hole drilling operations. Machinists and tooling specialists install this insert in T-A series spade drill bodies used on lathes, machining centers, and drill presses.

This insert is engineered for use on a wide range of primary workpiece materials including steel, stainless steel, cast iron, super-alloys, and titanium. It is well suited for production drilling environments in metalworking shops, job shops, and manufacturing facilities where tool life and cutting performance in difficult materials are priorities. The TiCN coating reduces built-up edge and extends service intervals compared to uncoated tooling, making it a practical choice for high-volume drilling operations.

Key Features

• 31/64 inch diameter, seat size Z for use with compatible T-A series spade drill bodies
• Cobalt high-speed steel construction at material grade T15 for strength and heat resistance
• TiCN PVD coating provides enhanced wear resistance and reduced friction at the cutting edge
• 132-degree point angle suitable for drilling steel, stainless steel, cast iron, super-alloys, and titanium
• 0.0938-inch insert thickness for consistent seating and repeatable positioning
• Single-piece package with minimum order quantity of one unit

Compatibility

Designed for use with T-A series spade drill bodies accepting a size Z seat. Suitable for workpiece materials classified under ISO codes P (steel), M (stainless steel), K (cast iron), and S (super-alloys and titanium).

Installation Notes

Installation is performed by machinists or tooling technicians. Power down and lock out the machine spindle before seating or replacing the insert. Ensure the insert pocket and seating surfaces are clean and free of chips before installation, as debris under the insert can cause deflection or insert damage. Follow the drill body manufacturer torque specifications for the insert clamping screw — do not overtighten.