Type F machine screws, Star drive flat head type F (trailer screws), Steel black phosphate finish

Star drive flat head thread cutting screw type F

Machine screw diameter is measured on the outside of the threads.

Star drive flat head type F machine screw diameter

Diameter and Thread count

See also

Metric machine screw

Metric machine screws

Screws with machine threads for use with a nut or in a tapped hole.

Socket product

Socket screws

Screws with an allen wrench drive.