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 6145-01-283-2482
NSN 5855-01-647-0320
NSN 5998-00-625-7224
NSN 6130-00-586-7173
NSN 6610-01-080-8064
NSN 6610-00-717-6666
NSN 6105-00-113-6292
NSN 5920-01-278-0600
NSN 6110-01-171-7348
NSN 6130-01-416-3796
NSN 6110-00-181-5634
NSN 6320-00-270-8222