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 6130-00-285-8119
NSN 5935-01-187-2698
NSN 6150-01-062-0853
NSN 6610-00-264-0961
NSN 5999-01-158-7233
NSN 6220-01-462-0236
NSN 5910-01-463-8168
NSN 5910-01-081-7399
NSN 5996-01-211-3562
NSN 5925-00-608-0973
NSN 5910-01-431-9690
NSN 5905-01-320-5726