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 5985-01-330-4026
NSN 5950-00-703-5112
NSN 6645-01-229-9769
NSN 6685-01-508-7325
NSN 6685-00-126-3741
NSN 5930-00-374-4839
NSN 6610-01-302-6347
NSN 5960-00-764-7164
NSN 5895-01-411-4984
NSN 5998-01-041-1534
NSN 5990-01-421-3325
NSN 5985-00-740-7142