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 5985-01-546-1442
NSN 7035-01-029-7221
NSN 6645-01-252-6708
NSN 6130-01-199-7595
NSN 5855-00-327-2061
NSN 5985-01-339-8213
NSN 5920-01-173-9925
NSN 5835-01-244-8532
NSN 5945-00-363-9481
NSN 6240-00-546-2244
NSN 5920-01-317-3506
NSN 6110-00-381-0602