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 5950-01-160-8176
NSN 5975-01-429-0022
NSN 5998-01-449-6335
NSN 6650-01-044-7746
NSN 5930-01-599-4727
NSN 5965-01-559-4958
NSN 7035-01-459-9598
NSN 6135-01-384-3915
NSN 6110-01-322-4204
NSN
NSN 6645-01-117-6156
NSN 5910-01-633-9963