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 6105-01-461-5088
NSN 5990-01-147-5225
NSN 6150-00-251-1159
NSN 5935-00-693-1166
NSN 6145-01-197-7469
NSN 6610-01-250-9327
NSN 5996-01-649-5616
NSN 5985-00-851-3897
NSN 6110-01-239-9319
NSN 6145-01-401-3713
NSN 5965-01-382-3415
NSN 6130-00-354-0251