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 2925-01-133-8128
NSN 5965-01-449-1101
NSN 5945-01-616-7295
NSN 6240-00-518-3541
NSN 5915-00-186-0463
NSN 6650-01-516-2287
NSN 5895-00-927-1189
NSN 5930-01-057-7653
NSN 5930-00-170-3585
NSN 5855-01-007-9541
NSN 2925-01-139-7098
NSN 6240-01-604-9172