The ISO metric thread system is the dominating system to which we produce our products. The inch based unified system still exist, but is slowly phased out.

The dominating material for our products is martensitic steels according to ISO898-1, in the higher strength grades. However, we also offer stainless steel and heat resistant fasteners and have the capability to developing non-ferrous products upon request.

The fastener industry is dominated by a few standardized drive types; hexagon, 12-point and Torx. We offer these drive types in a multitude of head shapes such as flange, cylindrical or pan head designs as well as completely tailor made head designs to customer request.

Almost all fasteners supplier by Bulten have a surface coating. Surface coatings are applied primarily as corrosion protection and to create a stable assembly friction, but there are decorative coatings as well where the corrosion protection is not the primary purpose.