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 5935-00-421-6868
NSN 7035-00-436-1229
NSN 5920-00-995-6079
NSN 5950-00-288-5994
NSN 5998-01-393-1221
NSN 6130-01-474-7939
NSN 5905-01-309-4768
NSN 7035-01-467-4539
NSN 5835-01-519-2916
NSN 5835-01-300-3493
NSN 6135-01-294-2131
NSN 5975-00-086-8300