These Forgefix Through Bolts have a Zinc Yellow Passivated finish for durability and corrosion resistance. They are through-fixing, economical, and quick to install. Ideal for fixing brackets, cladding, restraints, racking, fabricated stairwells, and industrial doors. Ensure the correct socket drive or spanner is used for accurate installation. The Zinc Yellow Passivation process provides an aesthetically pleasing coating with excellent resistance to corrosion. Specifications: Type - Through bolt, Fastener Material - Zinc yellow passivated, Thread Length - 80mm, Thread Size - 12mm.