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 5990-01-623-0082
NSN 5920-00-886-7896
NSN 6650-01-395-1882
NSN 5965-00-501-4867
NSN 6650-00-168-1502
NSN 6145-01-352-5925
NSN 5920-01-562-4779
NSN 5990-01-017-3590
NSN 6320-01-134-7267
NSN 6645-00-133-1536
NSN 7035-00-020-2227
NSN 5930-01-633-7591