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
NSN 6320-01-039-5891
NSN 6110-01-495-9806
NSN 5999-01-116-8286
NSN 5855-01-281-6689
NSN 6620-00-973-7946
NSN 6130-01-361-8355
NSN 5930-00-925-8246
NSN 5975-01-534-5160
NSN 5855-01-536-3978
NSN 6135-00-862-5736
NSN 2925-01-197-7864