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 4140-01-542-5522
NSN 5910-00-578-5908
NSN 6135-01-142-2417
NSN 2925-01-218-5556
NSN 5915-01-232-0860
NSN 6135-00-182-7008
NSN 5965-01-461-7195
NSN 5990-00-200-5232
NSN 4140-01-125-5187
NSN 5920-01-591-4811
NSN 5925-01-387-9630
NSN 6145-01-514-7305