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

Product Description

The ALLIED MACHINE AND ENGINEERING 15ZT-.484 is a spade drill insert designed for high-performance hole-making in demanding industrial machining applications. Manufactured from T15 cobalt high-speed steel and finished with a PVD-applied TiN (titanium nitride) coating, this insert delivers extended tool life and reduced friction at the cutting edge. It measures 31/64 inches in diameter and seats in a Size Z spade drill holder. The 132-degree point angle geometry is suited for controlled entry and chip formation across a range of workpiece materials. Thickness is 0.0938 inches. This insert is part of the T-A Series, a widely recognized platform in production drilling environments.

This insert is intended for use in production and job-shop machining operations where consistent hole geometry and tool longevity are required. It is rated for use in steel, stainless steel, cast iron, superalloys, and titanium workpieces, corresponding to ISO material codes P, M, K, and S. Typical applications include drilling operations on CNC machining centers, lathes, and dedicated drilling equipment across aerospace, automotive, energy, and general metalworking sectors. Installation requires a compatible T-A Series Size Z spade drill holder body.

Key Features

• T15 cobalt high-speed steel substrate for high red-hardness and wear resistance
• PVD TiN coating reduces cutting friction and extends insert service life
• 132-degree point angle supports accurate entry and efficient chip evacuation
• 31/64 inch diameter with Size Z seat sizing for direct holder compatibility
• Rated for steel, stainless steel, cast iron, superalloys, and titanium (ISO P, M, K, S)
• T-A Series platform for broad holder availability across production environments

Compatibility

Designed for use with T-A Series spade drill holder bodies accepting a Size Z insert seat. Confirmed workpiece material compatibility includes steel, stainless steel, cast iron, superalloys, and titanium.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Power down and lock out the machine spindle before seating or removing the insert. Ensure the holder pocket and insert seating surfaces are clean and free of chips or debris before securing the insert. Follow the holder manufacturer's clamping procedure and inspect the insert for chipping or wear before each production run.