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 5996-00-249-8956
NSN 6145-00-239-2143
NSN 5975-00-462-2911
NSN 5835-01-303-6563
NSN 7035-00-490-0485
NSN 6130-00-820-3695
NSN 5965-01-598-6114
NSN 5930-00-126-7192
NSN 7035-01-628-3485
NSN 5960-01-270-6362
NSN 5960-01-564-5044
NSN 5965-00-499-8229