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 6320-01-612-7035
NSN 5975-00-223-3082
NSN 5996-00-225-1179
NSN 7035-00-470-4977
NSN 5930-01-350-5715
NSN 6130-01-035-1259
NSN 5998-00-205-2951
NSN 6110-01-464-2830
NSN 6620-01-083-4672
NSN 6145-00-824-8522
NSN 4140-00-526-4505
NSN 4140-00-368-3485