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 5960-01-174-6975
NSN 5930-00-266-8175
NSN 5925-01-360-8673
NSN 6620-01-633-8443
NSN 5990-01-658-3102
NSN 4140-00-115-0830
NSN 5895-00-899-0334
NSN 5835-00-880-6477
NSN 6135-01-307-2749
NSN 6320-01-116-3980
NSN 5835-01-337-2793
NSN 5960-00-899-9353