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 6150-01-457-1473
NSN 5930-00-517-9440
NSN 4140-01-631-4447
NSN 6110-00-301-4874
NSN 6150-01-613-8839
NSN 5920-01-293-7418
NSN 5985-00-915-1299
NSN 6105-01-490-0170
NSN 4140-01-187-6922
NSN 6220-01-427-2333
NSN 6220-01-025-6140
NSN 5835-00-397-7697