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 6645-01-514-7901
NSN 5998-01-327-2995
NSN 5855-00-925-0114
NSN 2925-00-185-1618
NSN 6620-01-629-4045
NSN 5930-01-182-7486
NSN 6240-01-132-1634
NSN 2925-01-501-1104
NSN 5975-00-740-8367
NSN 5975-00-278-7437
NSN 5925-01-153-7493
NSN 5998-01-570-3994