Metric socket button head screw

Metric socket button head, Class 12.9 alloy steel black oxide finish, Coarse (standard) thread, 0.5mm

Socket button head diameter is measured on the outside of the threads.

Metric socket button head diameter

Metric socket button head, Class 12.9 alloy steel black oxide finish, Coarse (standard) thread, 0.5mm

Diameter and Thread pitch