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 6220-01-168-5108
NSN 6130-00-419-3642
NSN 5996-00-272-2560
NSN 6150-01-550-6133
NSN 6130-00-081-1039
NSN 7035-01-314-7559
NSN 5855-01-391-7472
NSN 5835-01-095-8851
NSN 6110-00-220-3054
NSN 5965-00-868-7061
NSN 6130-00-288-1886
NSN 5945-01-552-2199