Allied 18ZA-0014 Spade Drill Insert 7/16 in Cobalt Tialn

Product Description

The ALLIED MACHINE AND ENGINEERING 18ZA-0014 is a cobalt spade drill insert designed for high-performance drilling in demanding metalworking applications. Part of the T-A series, this insert features a 132-degree point angle and a TiAlN (titanium aluminum nitride) PVD coating that extends tool life in high-heat cutting environments. At 7/16 inch diameter and 0.0938 inch thickness, it seats in a Seat Size Z holder. It is installed by machinists and tooling specialists working in production machining, job shop drilling, and maintenance machining operations.

This insert is suited for drilling steel, stainless steel, cast iron, superalloys, titanium, and hard materials. The T-A series spade drill system is widely used in CNC and manual drilling setups where replaceable insert geometry reduces tooling cost and downtime. The 132-degree point geometry provides a stable entry cut and reduced thrust force across a range of workpiece materials, making it practical for both through-hole and blind-hole drilling applications.

Key Features

• 7/16 inch diameter, Seat Size Z for direct T-A series holder fitment
• Cobalt substrate provides toughness and heat resistance in interrupted cuts
• TiAlN PVD coating extends wear life in high-temperature drilling of ferrous and hard materials
• 132-degree point angle reduces entry thrust and improves hole entry stability
• 0.0938 inch insert thickness for precise, consistent seating
• Fractional inch measurement system; sold as single-piece unit

Compatibility

Designed for use with T-A series spade drill holders accepting a Seat Size Z insert at 7/16 inch diameter. Compatible primary workpiece materials include steel (P), stainless steel (M), cast iron (K), superalloys and titanium (S), and hard materials (H) per ISO material classification codes.

Installation Notes

Insert installation and replacement should be performed by a qualified machinist or tooling technician with the machine fully powered down and locked out per facility LOTO procedures. Inspect the holder seat for chips or debris before seating the insert to ensure proper contact and torque transfer. Follow the toolholder manufacturer's recommended insert clamping procedure; do not substitute clamping hardware. Handle coated inserts with clean gloves to avoid contaminating the cutting edge or seating surfaces.