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 2925-01-157-9204
NSN 6620-01-535-1230
NSN 6620-01-290-2973
NSN 5965-01-039-1430
NSN 5998-01-090-1192
NSN 6220-01-634-0660
NSN 5935-01-539-8738
NSN 5855-01-611-8933
NSN 6685-01-517-7287
NSN 6145-00-542-7980
NSN 6620-00-905-8530
NSN 6135-01-329-7994