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 5965-00-285-0745
NSN 5855-01-391-7077
NSN 5998-01-372-0093
NSN 5855-01-657-7657
NSN 5950-00-176-2874
NSN 6220-01-171-6976
NSN 7035-00-104-7613
NSN 5960-01-228-7092
NSN 7035-01-268-8042
NSN 6320-00-242-3300
NSN 6645-01-023-8020
NSN 6110-01-253-2559