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 4140-01-429-8545
NSN 5945-01-088-5940
NSN 6135-00-411-3171
NSN 5935-00-753-7895
NSN 6685-01-572-7860
NSN 5895-00-012-4125
NSN 5915-01-089-8809
NSN 6620-00-017-3901
NSN 6110-01-422-1572
NSN 5910-00-216-8081
NSN 5999-01-298-5078
NSN 6620-01-108-5824