Hexagonal socket

M 2

M 2,5

M 3

M 4

M 5

Partial threaded

Full threaded

Full or partial threaded

0,317 mm

0,353 mm

0,397 mm

0,453 mm

0,529 mm

3/32" (approx. 2,38 mm)

7/32" (approx. 5,56 mm)

2,5 mm

3 mm

4 mm

stainless steel

steel

DIN 127

DIN 912

DIN 913

blank

black oxidized

A2

12.9

A2 (18-8 / 304)