7/16″-14 x 1-3/4″ Zinc Grade 5 Carriage Bolts (50 pcs.)
Diameter: 7/16″ Length: 1-3/4″ Material: Steel Finish: Zinc Head Style: Carriage Thread Size: 14 (Coarse) Thread Length: Full Hardness: Grade 5 Type: Carriage Bolt Square-Depth: 1/4″ Box of 50. A carriage bolt has a domed or countersunk head, and the shank is topped by a short square section under the head. The square section grips into the part being fixed (typically wood), preventing the bolt from turning when the nut is tightened.