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 5999-00-756-0839
NSN 6150-01-350-3713
NSN 4140-00-200-9082
NSN 6150-01-256-9040
NSN 5855-00-779-2854
NSN 5945-01-560-5150
NSN 2925-01-633-4048
NSN 6135-01-245-5876
NSN 6650-01-407-4653
NSN 5990-01-378-1444
NSN 5965-00-281-0319
NSN 6145-01-592-5741