The Allied Machine & Engineering 15ZT-0016-SP is a 1/2-inch (0.5000) T-A replaceable spade drill insert designed for spot-and-chamfer drilling with a 90° point and compatibility with T-A spade drill holders. It is manufactured from high-speed steel in the Super Cobalt (SCOB) grade and coated with TiN to provide wear resistance, with a blade thickness of 3/32 inch. The insert uses a seat size Z and is intended for general-purpose drilling across metalworking applications. Packaged as two inserts per pack, this model is built to deliver repeatable alignment and reliable performance in standard drilling operations.
