Allied Machine 131A-.734 Spade Drill Insert 47/64 in Hss Tialn

Product Description

The ALLIED MACHINE AND ENGINEERING 131A-.734 is a spade drill insert designed for high-productivity drilling operations in metal fabrication and machining environments. This insert measures 47/64 inches in diameter and seats in a Size 1 holder, making it compatible with the T-A Series spade drill system. The body is manufactured from M4 grade high speed steel and features a TiAlN (titanium aluminum nitride) PVD coating that improves heat resistance and extends cutting life. The 132-degree point angle is suited for clean entry and controlled chip formation on a range of workpiece materials. Machinists and tooling technicians working in production or job shop settings are the primary installers.

This insert is intended for use in drilling steel, cast iron, and non-ferrous metals, covering ISO material groups P, K, and N. The T-A Series spade drill system is widely used in horizontal and vertical machining centers, CNC lathes, and drill presses where replaceable insert tooling reduces downtime versus solid drills. The 47/64 inch diameter positions this insert in a common intermediate size range for through-hole and blind-hole applications in industrial manufacturing, maintenance repair, and heavy equipment fabrication.

Key Features

• 47/64 inch diameter with Size 1 seat — fits T-A Series spade drill holders directly
• M4 high speed steel construction provides toughness and wear resistance in interrupted cuts
• TiAlN PVD coating improves thermal stability and extends tool life in steel and cast iron
• 132-degree point angle promotes accurate entry and reduces thrust load
• Rated for steel (P), cast iron (K), and non-ferrous metals (N) workpiece materials
• 0.1563 inch insert thickness — consistent seating in standard T-A Series bodies

Compatibility

Designed for use with ALLIED MACHINE AND ENGINEERING T-A Series spade drill holders accepting a Size 1 seat. Compatible with workpiece materials classified as steel (P), cast iron (K), and non-ferrous metals (N).

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Always power down and lock out the machine spindle before seating or removing drill inserts. Ensure the holder pocket is clean and free of chips before inserting to achieve proper seating and prevent premature insert failure. Follow the tool manufacturer's recommended clamping torque procedure for the specific holder being used.