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 5985-01-399-1094
NSN 5925-01-214-3228
NSN 5960-01-604-1158
NSN 5965-01-190-7391
NSN 5905-01-573-7437
NSN 4140-00-832-3286
NSN 5925-01-311-0831
NSN 6240-01-147-5115
NSN 5990-01-364-8405
NSN 5855-01-325-3380
NSN 6145-00-567-3255
NSN 6105-01-017-2748