Carriage Bolts Zinc: Carriage bolts have a round smooth head with a square neck under the head. The square neck keeps the bolt from turning as a nut is tightened. These bolts are low carbon (Grade 2) steel. The zinc coated are good for outdoor use, but not for use with treated lumber. If using treated lumber please go to Hot Dipped Galvanized Hardware.
|Material:||Steel||Thread Length:||Threaded up to 6"|
|Head Style:||Carriage||Socket Size:||N/A|
|Head Diameter:||0.782/0.844||Square Diameter:||0.368/0.388|
|Proof Load, Lb.:||4,250||Tensile Strength, Lb.:||5,750|
SAE J429 Proof Load and Tensile Strength Requirements Above
Length is Measured from Under the Head to the Bottom of the Bolt