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 6650-01-437-7808
NSN 5930-00-296-7687
NSN 5910-01-451-4905
NSN 4140-01-364-0109
NSN 6135-01-332-0431
NSN 6650-00-146-3282
NSN 6110-01-399-4899
NSN 5835-01-502-9228
NSN 5855-01-260-3693
NSN 6135-01-167-7604
NSN 5990-00-932-3070
NSN 5930-00-425-3500