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 4140-00-751-1694
NSN 2925-01-457-5649
NSN 5935-01-337-9505
NSN 5950-00-153-1959
NSN 6145-01-133-0451
NSN 6150-01-348-9684
NSN 5985-01-409-2865
NSN 5905-01-073-6991
NSN 6685-00-862-5131
NSN 5945-01-563-6868
NSN 6110-00-064-7005
NSN 4140-01-559-2033