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 5945-00-755-0066
NSN 5960-01-613-6122
NSN 5935-00-689-3664
NSN 5985-00-417-8883
NSN 7035-00-163-6221
NSN 5930-01-484-9852
NSN 5985-00-314-5213
NSN 6650-01-442-7893
NSN 6650-01-435-2994
NSN 5996-00-508-0383
NSN 5945-00-161-4014
NSN 6620-01-032-3937