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 5945-01-065-0887
NSN 5895-00-481-5019
NSN 5925-00-497-1860
NSN 6320-01-067-0474
NSN 5905-00-846-2922
NSN 6105-00-788-1185
NSN 5990-01-178-6307
NSN 5930-01-180-2752
NSN 5925-00-054-8476
NSN 6650-00-143-1889
NSN 4140-01-431-6560
NSN 5855-01-485-3429