Special Features:

Hexagon head, 1 5/16 width across flats; drill head 1/8 diameter 2 3/4 dep; 1/8 diameter through hole in circular groove 1 31/92 from bottom of head; undercut shoulder is 3 11/16 from bottom of head prior to externally threaded end; diameter of pin is 0.871 minimal and 0.872 max

Properties:

An externally threaded fastener whose external threaded portion is of one nominal diameter. It has a concentric hole along the longitudinal centerline which may extend a part or the full length of the bolt. The concentric hole along the centerline may be counterbored and/or internally threaded at the head end or the bolt end. The head is designed to be held or driven by an external and/or internal driver. For items having a hole(s) perpendicular to the axis which meet the concentric hole along the longitudinal centerline, see bolt, fluid passage.