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 5835-00-145-8926
NSN 5935-00-155-4662
NSN 5985-00-332-4008
NSN 5855-01-172-1788
NSN 5996-01-495-0763
NSN 6220-01-451-7083
NSN 5915-01-590-4900
NSN 5835-01-133-6485
NSN 5930-01-136-4046
NSN 6610-01-083-1446
NSN 6145-00-932-1950
NSN 5905-01-496-6738