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 5855-01-450-2333
NSN 5996-00-236-7712
NSN 5998-01-257-3966
NSN 5990-00-617-1422
NSN 6620-01-317-7849
NSN 6240-00-215-8550
NSN 2925-01-612-0405
NSN 5920-01-422-0193
NSN 5895-00-148-8386
NSN 7035-00-231-2871
NSN 2925-00-139-8309
NSN 6105-00-120-9601