Hexagonal flange nut
DIN6923/Hexagon Flange Bolt
The information of DIN6923 is as follows:
diameter: 3 4 5 6 8 10 12 14 16 20
material: 304 316 D2-80 carbon steel copper
thread form: Coarse thread and so on
surface finishing: natural coating black galvanizing Dacromet coating and so on