Allied 150T-15.5 Spade Drill Insert 39/64 in Cobalt Tin

Product Description

The ALLIED MACHINE AND ENGINEERING 150T-15.5 is a spade drill insert designed for high-performance hole-making in demanding machining applications. Built from T15 cobalt high-speed steel and finished with a TiN (titanium nitride) PVD coating, this insert delivers extended tool life and improved wear resistance under aggressive cutting conditions. It measures 39/64 inches in diameter with a 132-degree point angle and fits Seat Size 0 T-A series spade drill holders. The combination of cobalt substrate and TiN coating makes it well suited for applications where heat and abrasion are primary concerns.

This insert is used in production drilling operations across a range of industries, including metalworking, aerospace, and general manufacturing. Its fractional inch sizing and T-A series compatibility make it a standard choice for shops running Allied T-A spade drill bodies in Seat Size 0. Primary workpiece materials include steel, stainless steel, cast iron, superalloys, and titanium, covering ISO material codes P, M, K, and S. It is sold individually and packaged as a single unit per order.

Key Features

• T15 cobalt high-speed steel substrate for heat and wear resistance in difficult-to-machine materials
• TiN PVD coating reduces friction and extends cutting edge life
• 132-degree point angle optimized for reduced thrust and accurate entry on a wide range of workpiece materials
• Seat Size 0 fits standard Allied T-A series spade drill holders
• Fractional inch system sizing at 39/64 inches diameter for direct integration into inch-based setups
• Compatible with steel, stainless steel, cast iron, superalloys, and titanium workpieces

Compatibility

Designed for use with Allied Machine and Engineering T-A series spade drill holders accepting Seat Size 0 inserts. Compatible primary workpiece materials include steel, stainless steel, cast iron, superalloys, and titanium (ISO material codes P, M, K, and S).

Installation Notes

Spade drill inserts should be installed and replaced by qualified machinists or tooling technicians following the holder manufacturer's seating and torque guidelines. Ensure the machine spindle is fully powered down and locked out before inserting or removing any cutting insert. Inspect the seat and clamping screw for wear or damage before seating a new insert, as a compromised seat will affect runout and tool life. Follow applicable shop safety and cutting fluid procedures for the workpiece material being drilled.