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 5920-00-103-4494
NSN 5920-00-246-5992
NSN 5920-00-879-0466
NSN 5895-01-560-7229
NSN 5835-01-416-6449
NSN 2925-00-127-7828
NSN 2925-01-476-3224
NSN 5990-00-617-1422
NSN 4140-00-058-9839
NSN 5910-01-239-3126
NSN 6240-01-043-5308
NSN 6145-00-815-0744