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 5996-00-598-4839
NSN 5920-01-358-6930
NSN 5895-00-812-6914
NSN 5925-01-325-6185
NSN 5910-00-833-9191
NSN 4140-00-531-6696
NSN 5910-00-038-6339
NSN 7035-01-298-5154
NSN 6105-01-364-8811
NSN 6685-00-970-1606
NSN 6620-00-269-8950
NSN 6220-00-147-0035