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 5998-01-580-1657
NSN 6645-01-462-2101
NSN 4140-01-392-4664
NSN 4140-00-218-3579
NSN 6240-01-392-8868
NSN 6620-01-586-4260
NSN 6320-01-384-3850
NSN 2925-01-364-7926
NSN 5920-00-518-1793
NSN 5996-00-413-0878
NSN 6135-00-170-8819
NSN 5905-01-307-0621