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 4140-00-388-6829
NSN 5915-00-455-2076
NSN 6220-01-101-2324
NSN 5905-01-156-0219
NSN 6110-01-655-7400
NSN 5990-01-266-9144
NSN 5985-01-455-0321
NSN 2925-01-572-0539
NSN 6620-01-598-2271
NSN 5905-01-365-7645
NSN 7035-01-391-7470
NSN 6645-00-814-4558