An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See bolt, internal wrenching. Excludes screw, shoulder; and screw, machine.
NSN 4140-01-355-0045
NSN 5999-01-579-3601
NSN 6150-00-262-4977
NSN 6645-01-391-9820
NSN 6320-01-511-1526
NSN 5999-01-496-2201
NSN 5855-01-018-1247
NSN 5996-01-355-2834
NSN 5910-01-578-8593
NSN 6320-01-436-0513
NSN 4140-01-349-9071
NSN 5950-01-494-9778