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 5905-01-529-3041
NSN 6685-01-437-4305
NSN 6685-00-131-2200
NSN 6145-01-003-9741
NSN 5945-01-183-3768
NSN 5998-00-785-0929
NSN 6110-01-422-0873
NSN 6240-01-558-9338
NSN 4140-00-719-5654
NSN 6240-01-603-0143
NSN 5935-00-413-4411
NSN 5920-01-161-8120