Description:

Size: 5/16 inch-18 X 2-1/2 inch. 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(s) Met: ASME B18.5 and ASTM A307A.