Carriage bolts feature a slightly rounded head and have no exposed sharp edges when fully fastened. Due to that reason， they are often used when a more aesthetic look is desired. They are commonly used on docks and on playground equipment or in cases where it may be difficult to reach the bolt head with a tool. The square shoulder on carriage bolts help to hold it in place while the nut is fastened.

Size: 3/8 in.-16 x 10 in.

Features a smooth rounded head as opposed to a standard hex head

Square shoulder allows for nut to be tightened or loosened

Often used in cases where a protruding bolt head could cause injury

Nuts and washers not included， ensure washers and nuts are same diameter

Thread type: coarse， thread class: UNC-2A， point style， blunt

Specification met: ASME B18.5 and ASTM A307A