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 4140-01-451-3774
NSN 6150-00-557-7656
NSN 6150-01-298-7505
NSN 6240-00-476-1228
NSN 5998-00-786-8120
NSN 6110-01-554-8653
NSN 6645-01-462-2101
NSN 5985-01-080-8452
NSN 5895-00-232-1314
NSN 5950-01-025-9918
NSN 6685-01-106-8396
NSN 5915-01-626-3674