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 5965-00-226-0209
NSN 5930-00-501-5109
NSN 6645-01-243-3138
NSN 6620-01-265-0632
NSN 6105-00-061-7943
NSN 6685-01-155-3061
NSN 6650-00-065-4280
NSN 5935-01-459-5373
NSN 5996-00-633-4308
NSN 5945-01-229-7179
NSN 6105-01-565-3557
NSN 6150-00-857-8929