Forgefix through bolt zinc yellow passivated forgefix 5tb12180 these forgefix through bolts also known as wedge anchors or toothless anchors have a zinc yellow passivated finish for durability and corrosion resistance they are through fixing and extremely 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 to ensure accurate installation the zinc yellow pa