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 6645-01-087-7345
NSN 6645-01-189-6942
NSN 5915-00-285-2213
NSN 6110-00-591-3934
NSN 6240-01-478-3332
NSN 5965-01-580-8049
NSN 6130-01-564-1795
NSN 5835-01-174-7700
NSN 5835-01-654-4570
NSN 6645-01-204-7094
NSN 6105-01-157-4471
NSN 6620-01-549-6653