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 5960-00-692-2887
NSN 6645-01-493-2620
NSN 5960-01-553-4557
NSN 5985-01-415-9208
NSN 5855-01-003-7102
NSN 6145-01-343-5443
NSN 5975-00-422-1301
NSN 5935-00-155-4662
NSN 5910-01-188-2487
NSN 5950-00-964-7450
NSN 6645-01-192-8717
NSN 5910-00-838-9421