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 5910-01-329-3257
NSN 5855-00-185-1560
NSN 5990-01-512-9129
NSN 6110-00-901-8215
NSN 5855-00-962-5792
NSN 5835-01-493-1826
NSN 5998-01-247-9888
NSN 5965-01-114-9086
NSN 5998-01-236-0433
NSN 6110-00-696-3145
NSN 6110-01-488-7797
NSN 5910-01-538-2540