A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
NSN 6610-01-160-6585
NSN 5855-01-161-8964
NSN 6650-01-416-8405
NSN 5950-00-269-2945
NSN 5915-00-719-4693
NSN 5895-01-497-2191
NSN 5950-01-560-6383
NSN 5910-01-416-9444
NSN 4140-00-960-6573
NSN 5998-01-334-7022
NSN 5945-00-301-4830
NSN 6105-01-422-3161