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 5895-01-362-5691
NSN 6685-01-223-1789
NSN 6320-01-415-0953
NSN 6105-01-480-6179
NSN 5905-01-272-4324
NSN 5996-01-280-5417
NSN 5855-00-107-7993
NSN 5960-01-454-7064
NSN 5950-00-393-1553
NSN 5935-01-554-1930
NSN 5945-00-741-3711
NSN 6105-01-371-3045