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 6105-00-903-6789
NSN 5930-01-137-1723
NSN 6685-00-509-8033
NSN 5960-01-467-7516
NSN 2925-00-233-5644
NSN 5996-01-371-2958
NSN 5935-00-476-5111
NSN 6620-00-330-3728
NSN 6650-00-273-8444
NSN 5996-00-405-4509
NSN 6685-01-135-4357
NSN 6105-01-380-4392