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 6620-00-824-4609
NSN 6650-01-607-6891
NSN 5999-01-378-7196
NSN 4140-01-009-9951
NSN 5985-01-088-6193
NSN 5930-00-515-7655
NSN 7035-01-131-1168
NSN 5999-01-223-7582
NSN 5915-00-402-4344
NSN 5998-00-930-5726
NSN 5925-00-102-0261
NSN 5915-00-933-2855