Dokka Fasteners A/S has been producing large-diameter, high-tensile, high-quality bolts, studs, and rods for more than 100 years, servicing industries such as wind, oil & gas, heavy equipment and cranes. Located in Dokka, Norway, Dokka Fasteners has the most automated production in the range between M12 to M100 with all critical processes such as hardening, hot dip galvanizing and quality inspection in-house.