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 5915-01-469-6831
NSN 5895-01-225-0529
NSN 5905-01-612-4796
NSN 6320-01-192-0332
NSN 6240-01-469-5719
NSN 5950-00-700-0979
NSN 7035-01-095-9322
NSN 5965-00-603-9306
NSN 6105-00-932-5309
NSN 5915-00-518-0851
NSN 6130-01-039-7418
NSN 5998-00-930-8126