Cold forged 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.
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Hot dip galvanized