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 7035-01-190-7332
NSN 6110-01-360-5568
NSN 5945-01-304-2230
NSN 5950-01-621-2907
NSN 5975-00-061-7035
NSN 5895-01-040-3634
NSN 5975-01-419-1218
NSN 5998-00-225-8522
NSN 5975-01-329-6824
NSN 6620-01-253-0374
NSN 6650-01-113-6689
NSN 6645-01-353-6863