5/8″-11 x 4-1/2″ Green Rinsed Zinc Grade 5 Carriage Bolts (13 pcs.)
Diameter: 5/8″ Length: 4-1/2″ Material: Steel Finish: Green Rinsed Zinc Head Style: Carriage Thread Size: 11 (Coarse) Thread Length: Full Hardness: Grade 5 Type: Carriage Bolt Box of 13. 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.