Allied Machine 18ZT-0014 Spade Drill Insert 7/16 in Cobalt Tin

Product Description

The ALLIED MACHINE AND ENGINEERING 18ZT-0014 is a cobalt spade drill insert designed for high-performance hole-making in demanding industrial drilling applications. Sized at 7/16 inch diameter with a Seat Size Z designation, this insert fits T-A Series spade drill holders. The 132-degree point angle is suited for work in steel, stainless steel, and cast iron. A TiN (titanium nitride) PVD coating reduces friction and extends cutting edge life. At 0.0938 inches thick, this insert delivers consistent geometry and reliable seating in compatible T-A Series bodies. Machinists and tool crib operators working in production environments will find this a direct OEM-compatible replacement or fresh supply insert.

This insert is intended for use in T-A Series spade drill holder bodies across a range of metalworking operations. Primary workpiece materials include steel, stainless steel, cast iron, super-alloys, titanium, and hard materials, corresponding to ISO material codes P, M, K, S, and H. It is well suited to CNC machining centers, lathes with live tooling, and dedicated drill presses in job shop or production settings where controlled hole entry and exit are required.

Key Features

• 7/16 inch diameter, Seat Size Z for T-A Series spade drill bodies
• Cobalt substrate provides heat and wear resistance in tough workpiece materials
• TiN PVD coating reduces built-up edge and extends tool life
• 132-degree point angle optimized for steel and ferrous alloy drilling
• 0.0938 inch insert thickness for consistent seating and repeatable geometry
• Compatible with ISO material groups P, M, K, S, and H workpieces

Compatibility

Designed for use with T-A Series spade drill holder bodies requiring a Seat Size Z, 7/16 inch diameter insert. Verify holder seat size and series designation before installation.

Installation Notes

Insert replacement should be performed by a qualified machinist or tooling technician with the machine powered down and locked out per facility lockout/tagout procedures. Seat the insert fully into the holder pocket and torque the clamping screw using the holder manufacturer's recommended tooling. Inspect the holder seat for chips or damage before installing a new insert. Do not run a damaged or improperly seated insert.