Allied Machine 131T-24 Spade Drill Insert 24mm Hss Tin

Product Description

The ALLIED MACHINE AND ENGINEERING 131T-24 is a spade drill insert designed for use in T-A series spade drill holders. Built from M4-grade high speed steel with a PVD-applied TiN (titanium nitride) coating, this insert delivers wear resistance and extended tool life in demanding drilling applications. The 24 mm cutting diameter and 132-degree point angle make it well-suited for initiating and completing through-holes in a wide range of workpiece materials. At 0.1563 inches thick and weighing 0.1 pounds, the insert seats securely in a Seat Size 1 holder body. Machinists and tooling specialists install this insert as a direct replacement or initial setup component in production and job-shop environments.

The 131T-24 is intended for drilling operations on steel, cast iron, and non-ferrous metals, covering ISO material classifications P, K, and N. It fits standard T-A series Seat Size 1 holder bodies and is appropriate for both CNC machining centers and manual drill press setups where spade drill tooling is specified. Typical applications include through-hole and blind-hole drilling in structural and alloy steels, gray and ductile cast iron, aluminum, and copper alloys. This insert is packaged individually and ordered in single-unit quantities.

Key Features

• 24 mm cutting diameter with a 132-degree point angle for accurate hole entry and chip control
• M4-grade high speed steel substrate provides toughness in interrupted and continuous cuts
• PVD TiN coating reduces friction and extends insert life across multiple workpiece materials
• Seat Size 1 profile ensures precise seating and repeatability in compatible T-A holder bodies
• Rated for steel, cast iron, and non-ferrous metal workpieces (ISO P, K, N classifications)

Compatibility

Designed for use with T-A series spade drill holder bodies using Seat Size 1. Compatible with primary workpiece materials classified as steel, cast iron, and non-ferrous metal (ISO material codes P, K, and N).

Installation Notes

Installation is performed by qualified machinists or tooling setup personnel. Before changing inserts, ensure the machine spindle is fully stopped and locked out per applicable safety procedures. Seat the insert fully into the holder body and secure the clamping screw to the holder manufacturer's specified torque using appropriate hex-key tooling. Inspect the seating surface and insert pocket for chips or debris before each installation to ensure proper contact and runout control.