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 5945-01-576-1509
NSN 5915-00-658-0606
NSN 6685-01-145-3938
NSN 6150-01-267-8708
NSN 5998-00-057-3702
NSN 5835-01-377-8972
NSN 5960-00-246-4623
NSN 6685-01-416-3714
NSN 6110-01-200-7447
NSN 5895-01-140-3374
NSN 6145-01-484-2495
NSN 6685-00-422-9900