Allied Machine 15ZA-0016 Spade Drill Insert 1/2 in Cobalt

Product Description

The ALLIED MACHINE AND ENGINEERING 15ZA-0016 is a cobalt spade drill insert designed for high-performance hole-making in metalworking applications. It features a 1/2 inch diameter, a 132-degree point angle, and a TiAlN (Titanium Aluminum Nitride) PVD coating that extends tool life by reducing heat buildup and wear at the cutting edge. At 0.0938 inches thick, this insert fits Seat Size Z holders in the T-A spade drill system. It is installed by machinists and tool-and-die professionals running production or job-shop drilling operations.

This insert is suited for drilling steel, stainless steel, cast iron, super-alloys, and titanium — covering ISO material groups P, M, K, and S. The T-A series spade drill system is widely used in CNC machining centers, lathes, and dedicated drilling machines where indexable inserts reduce downtime versus regrinding solid drills. The TiAlN coating makes this insert particularly effective in dry or minimal-quantity lubrication (MQL) cutting environments where heat resistance is critical.

Key Features

• 1/2 inch diameter with 132-degree point angle for aggressive, self-centering entry
• Cobalt substrate provides toughness and heat resistance in difficult-to-machine alloys
• TiAlN PVD coating reduces friction and extends tool life in dry and MQL cutting
• Seat Size Z for direct fit into compatible T-A series spade drill holders
• Rated for steel, stainless steel, cast iron, super-alloys, and titanium workpiece materials
• Indexable insert design eliminates regrinding and simplifies tool management

Compatibility

Designed for use with T-A series Seat Size Z spade drill holders. Compatible with workpiece materials classified under ISO groups P (steel), M (stainless steel), K (cast iron), and S (super-alloys and titanium).

Installation Notes

Installation should be performed by a qualified machinist following the holder manufacturer's insert-seating procedure. Ensure the spindle is powered down and the machine is locked out before changing inserts. Inspect the seat pocket for chips or damage before seating the new insert, as debris under the insert can cause premature failure or inaccurate hole geometry. Follow the tool holder manufacturer's specified clamp-screw torque procedure for the T-A system.