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 6105-01-441-7974
NSN 5990-01-309-3740
NSN 6320-01-631-7828
NSN 6105-00-187-0094
NSN 6105-01-314-6667
NSN 6620-01-232-0680
NSN 6150-01-601-8870
NSN 5965-01-121-6135
NSN 6145-01-476-8657
NSN 4140-00-459-9045
NSN 5950-01-476-7341
NSN 7035-01-209-6325