Stainless Steel Machine Screw, Plain Finish, Pan Head, Phillips Drive, 5/16" Length, #4-40 Threads (Pack of 100)

The stainless steel machine screw has a plain finish and a pan head with a Phillips drive. Stainless steel resists corrosion and may be magnetic. The Phillips drive has an x-shaped slot that accepts a Phillips driver and is designed to allow the driver to slip out of the head to help prevent over-tightening and damage to the thread or fastener. The pan head has a flat top and short vertical sides with a rounded top edge.

Machine screws are threaded fasteners that are typically used with nuts or drilled and tapped (threaded) holes. Machine screws are available with a variety of head shapes, which determine how the screw interacts with the mating surface, and drive styles, which determine the type of driver required to install and remove the screw.