Technical Library

Bolt King maintains a library of National and International Standards. These cover standards for raw materials and dimensions. Below is a selection of commonly referenced dimensional standards. Please do not hestitate to get in touch if you have any queries.

Metric Bolting Standards

Hexagon Bolt

DIN 931 / ISO 4014

Hexagon Screw

DIN 933 / ISO 4017

Socket Head Capscrew

DIN 912 / ISO 4762

Studbolt

DIN 976

Hexagon Flange Bolt

DIN 6921 / ISO 4162

Hexagon Bolt (Fine Pitch)

DIN 960

Hexagon Nut

DIN 934/ ISO 4032

Flat Washer

DIN 125

SPECIAL FASTENERS IN EXOTIC ALLOYS, INCLUDING INCONEL AND SUPER DUPLEX