5/16 inches
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 6220-00-593-3179
NSN 6110-01-341-0662
NSN 6610-01-100-3662
NSN 5960-01-567-1096
NSN 5945-00-133-0499
NSN 5960-01-425-1454
NSN 5855-01-398-0090
NSN 5996-00-772-1956
NSN 6650-01-469-2400
NSN 7035-01-372-5006
NSN 7035-01-628-6891
NSN 6320-01-054-3046