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 4140-01-041-2636
NSN 5895-00-998-6251
NSN 5945-01-335-8233
NSN 5935-00-826-9291
NSN 6105-01-185-1284
NSN 6685-01-561-7719
NSN 5975-01-064-2868
NSN 6240-01-343-2035
NSN 6145-01-559-2050
NSN 5990-01-620-6736
NSN 5935-01-549-6337
NSN 5950-01-478-3981