Allied Machine 152T-0031-FB Spade Drill Insert 31/32 in Cobalt

Product Description

The ALLIED MACHINE AND ENGINEERING 152T-0031-FB is a spade drill insert designed for high-performance through-hole and blind-hole drilling operations. Built from cobalt high-speed steel and finished with a physical vapor deposition (PVD) titanium nitride (TiN) coating, this insert delivers elevated wear resistance and heat tolerance compared to standard HSS tooling. It features a 180-degree point angle and measures 31/32 inch in diameter with a thickness of 0.1875 inches. Seat Size 2 designates the compatible holder shank class. Machinists and toolroom professionals install this insert into compatible T-A series spade drill holders for production and job-shop drilling applications.

This insert is suited for drilling steel, stainless steel, cast iron, super-alloys, and titanium workpieces, covering ISO material groups P, M, K, and S. It is used in CNC machining centers, drill presses, and manual lathes wherever a T-A series Seat Size 2 holder is in service. The 180-degree point angle reduces thrust and supports flat-bottom entry in layered or pre-spotted workpieces. Package quantity is 1 insert per unit; minimum order quantity is 2 units.

Key Features

• Cobalt high-speed steel construction for increased heat and wear resistance over standard HSS
• PVD TiN coating extends cutting edge life and reduces built-up edge on ferrous materials
• 180-degree point angle minimizes axial thrust and supports flat-bottom entry
• Seat Size 2 fits T-A series spade drill holders in the corresponding shank class
• Compatible with steel, stainless steel, cast iron, super-alloys, and titanium workpieces
• 0.1875-inch insert thickness provides consistent seating geometry in the holder pocket

Compatibility

Designed for use with T-A series spade drill holders accepting a Seat Size 2 insert. Compatible workpiece materials include steel, stainless steel, cast iron, super-alloys, and titanium (ISO groups P, M, K, and S).

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. De-energize and lock out the machine before inserting or removing the spade drill insert. Seat the insert fully against the holder pocket and torque the clamping screw to the holder manufacturer's specified value using a calibrated torque wrench. Inspect the insert seat and clamping surfaces for chips or debris before each use to prevent insert movement during cutting.