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 5930-00-360-6533
NSN 5835-01-080-7784
NSN 5985-01-184-7881
NSN 6650-00-269-5000
NSN 6685-00-509-1471
NSN 6130-01-364-0894
NSN 7035-01-057-6325
NSN 6650-00-052-3202
NSN 6220-00-112-2182
NSN 4140-00-383-2537
NSN 6620-01-334-8938
NSN 5835-01-069-8002