Cold Forged Bolts

Tower Bolts

ASTM A394 Steel transmission tower bolts are manufactured for use in the “steel to steel” connections of power transmission towers, substations and other similar structures.  They are available in hex head or square head design.  Tower bolts are available in 3 types: 

Type 0 = Hot dip zinc-coated bolts made of low or medium carbon steel 

Type 1 = Hot dip zinc-coated bolts made of medium carbon steel, quenched and tempered 

Type 3 = Bare (uncoated), quenched and tempered bolts made of weathering steel 

Tower Bolts are required to have the bolt length stamped on the head of the bolt.