Metric socket button head, Stainless steel 316 (A-4), Coarse (standard) thread
Socket button head screw

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

Metric socket button head diameter

Metric socket button head, Stainless steel 316 (A-4), Coarse (standard) thread

Diameter and Thread pitch

2.5mm x 0.45mm 3mm x 0.5mm 4mm x 0.7mm 5mm x 0.8mm 6mm x 1.0mm 8mm x 1.25mm 10mm x 1.5mm 12mm x 1.75mm