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 5975-01-385-8736
NSN 4140-01-569-7183
NSN 6645-01-625-8023
NSN 5855-01-131-9336
NSN 5935-00-708-2362
NSN 6130-01-604-8911
NSN 6240-01-621-2774
NSN 6645-01-421-4007
NSN 5835-01-236-6514
NSN 5990-01-360-0711
NSN 5935-01-612-0031
NSN 5910-01-024-1021