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 5965-01-190-7391
NSN 6105-01-317-0342
NSN 6105-01-067-2806
NSN 6135-00-461-3590
NSN 2925-01-553-3546
NSN 5975-00-471-8431
NSN 5990-01-425-2175
NSN 5990-01-434-7913
NSN 5965-00-928-6983
NSN 5925-01-332-2616
NSN 5996-00-186-8709
NSN 5930-01-541-4695