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 4140-00-272-0943
NSN 6240-01-327-4945
NSN 6620-01-171-2505
NSN 5996-01-271-1542
NSN 7035-00-731-8729
NSN 6240-01-451-1409
NSN 5905-01-311-3629
NSN 5998-01-548-9559
NSN 6610-00-064-9351
NSN 5960-01-632-6576
NSN 5985-01-381-1925
NSN 2925-00-422-5159