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 5835-01-422-7393
NSN 5905-01-160-7887
NSN 2925-01-363-1805
NSN 5985-00-613-0162
NSN 5999-00-922-4894
NSN 5905-01-104-3899
NSN 5895-00-877-2267
NSN 6320-01-607-1491
NSN 6220-01-338-1728
NSN 5960-00-421-1054
NSN 4140-00-185-1580
NSN 5998-01-181-6051