Star drive pan head machine screw

Metric machine screws, Star drive pan head, Stainless steel 18-8 (A-2), Coarse (standard) thread

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

Phillips pan head machine screw diameter

Metric machine screws, Star drive pan head, Stainless steel 18-8 (A-2), Coarse (standard) thread

Diameter and Thread pitch