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 5930-01-469-0673
NSN 5835-01-537-1228
NSN 5920-01-387-7779
NSN 2925-00-555-4578
NSN 6610-00-982-2778
NSN 5960-00-227-0243
NSN 5915-01-244-8344
NSN 5990-00-498-5934
NSN 5935-01-136-7667
NSN 5996-01-266-8706
NSN 5895-00-932-6698
NSN 5998-01-067-7951