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.
BOLTS,NUTS OR SCREWS, NOI (SUB 3)
COMPRESSOR UNIT, RTY;AIR WHL DSL DRVN 750CFM 100PSI (CCE)