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 5895-01-449-2804
NSN 5855-01-302-9778
NSN 5985-01-521-4345
NSN 6145-01-628-9214
NSN 6610-01-302-2073
NSN 6240-01-421-4025
NSN 6685-01-474-2254
NSN 5950-01-618-6398
NSN 5835-00-518-4507
NSN 6145-00-174-4862
NSN 5905-01-487-8482
NSN 5935-00-570-9075