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 6220-01-400-0637
NSN 5855-01-423-0817
NSN 6685-01-510-9386
NSN 6620-00-596-1951
NSN 7035-00-140-3070
NSN 5950-01-443-9285
NSN 4140-00-147-8971
NSN 5996-01-041-5906
NSN 5855-01-304-3064
NSN 6650-01-430-4126
NSN 5935-01-339-3538
NSN 5998-01-152-3019