Allied Machine 1C22T-0031 Spade Drill Insert 31/32 in

Product Description

The ALLIED MACHINE AND ENGINEERING 1C22T-0031 is a solid carbide spade drill insert designed for high-performance hole-making in demanding materials. Measuring 31/32 inches in diameter with a 132-degree point angle, this insert fits Seat Size 2 T-A series spade drill holders. It carries a TiN (titanium nitride) PVD coating and is manufactured to C2 (K20) carbide grade, giving it the wear resistance and edge retention needed for interrupted cuts and abrasive workpieces. Machinists and tool-room technicians install this insert when replacing worn cutting edges on existing T-A series drill bodies, making it a cost-effective alternative to replacing the full tool assembly.

This insert is suited for drilling operations in stainless steel, cast iron, non-ferrous metals, super-alloys, and titanium. The T-A series platform is widely used in production machining environments — CNC machining centers, lathes with live tooling, and manual drill presses where spade drill holders are already in use. It is appropriate for both roughing and semi-finishing hole applications where dimensional consistency and chip control are priorities across these varied workpiece materials.

Key Features

• Solid carbide construction at C2 (K20) grade for hardness and thermal resistance
• TiN PVD coating reduces friction and extends cutting-edge life
• 132-degree point angle optimized for entry stability and chip formation
• 31/32 inch diameter, Seat Size 2 — direct fit for T-A series drill bodies
• Compatible with stainless steel, cast iron, non-ferrous metals, super-alloys, and titanium workpieces
• 0.1875 inch insert thickness for consistent seating and repeatable runout

Compatibility

Designed as a replacement insert for ALLIED MACHINE AND ENGINEERING T-A series spade drill holders accepting Seat Size 2 inserts at 31/32 inch diameter.

Installation Notes

Installation is performed by a machinist or toolroom technician. The spindle or machine tool must be fully powered down and locked out before removing or seating the insert. The insert seat and clamping screw should be cleaned and inspected for debris or damage before installation to ensure proper seating and prevent runout. Follow the tool holder manufacturer's torque specifications for the clamping screw — do not overtighten, as this can crack carbide inserts.