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
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