Allied Machine 131T-0024 Spade Drill Insert 3/4 in Hss Tin

Product Description

The ALLIED MACHINE AND ENGINEERING 131T-0024 is a spade drill insert designed for use in T-A series spade drill holders. It measures 3/4 inch in diameter and seats in a Size 1 holder. The insert is manufactured from M4 grade high speed steel and receives a PVD-applied titanium nitride (TiN) coating for improved wear resistance and tool life. At 0.1563 inches thick with a 132-degree point angle, this insert delivers consistent entry geometry across a range of workpiece materials. It is installed and changed out by machinists and tool-room technicians in production and job-shop environments.

This insert is suited for drilling operations in steel, cast iron, and non-ferrous metals. The T-A series platform is widely used in CNC machining centers, manual lathes, and drilling fixtures where replaceable spade inserts reduce per-hole tooling cost. The 132-degree point angle is a general-purpose geometry that performs well across the primary workpiece material groups listed for this insert. Typical applications include through-hole and blind-hole drilling in medium to heavy material stock.

Key Features

• 3/4 inch diameter with Size 1 seat fits standard T-A series spade drill holders
• M4 grade high speed steel substrate for toughness in interrupted and continuous cuts
• PVD TiN coating improves surface hardness and reduces built-up edge
• 132-degree point angle provides general-purpose entry geometry
• 0.1563 inch insert thickness maintains consistent seating and repeatability
• Compatible workpiece materials include steel, cast iron, and non-ferrous metals

Compatibility

Designed for use with T-A series spade drill holders accepting a Size 1 seat and 3/4 inch diameter inserts. Primary workpiece material classifications supported are P (steel), K (cast iron), and N (non-ferrous metal).

Installation Notes

Insert replacement should be performed with the machine powered down and the spindle locked or at rest. Use the appropriate T-A series insert seating tool or torque wrench as specified by the holder manufacturer to secure the insert without over-torquing the clamping screw. Inspect the holder pocket and clamping components for wear or debris before seating a new insert. Follow the machine shop safety protocols and tool manufacturer guidelines when handling coated cutting inserts.