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 4140-01-141-1257
NSN 5945-01-460-9115
NSN 6320-00-139-1090
NSN 6650-00-920-0332
NSN 2925-00-902-3881
NSN 6645-01-318-7371
NSN 5925-01-435-4943
NSN 6110-01-443-5010
NSN 6320-01-443-8676
NSN 5930-00-906-2024
NSN 5950-01-244-2407
NSN 5920-01-358-3158