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 4140-01-250-2600
NSN 5905-00-284-8146
NSN 5960-00-167-7875
NSN 6685-01-481-3864
NSN 6220-01-559-1653
NSN 6135-01-532-4104
NSN 5935-01-070-8021
NSN 6610-01-455-0290
NSN 6620-00-506-0112
NSN 5910-01-607-0784
NSN 6650-00-210-4399
NSN 5905-01-417-4381