Description
Diameter: 1/4" Length: 1-1/2" Material: Silicon Bronze Head Style: Carriage Thread Size: 20 (Coarse) Thread Length: Full Type: Carriage Bolt Box of 2. 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.