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 5960-01-350-2925
NSN 4140-00-473-2324
NSN 5990-00-922-7317
NSN 7035-01-651-0678
NSN 2925-00-149-0760
NSN 6145-01-291-6894
NSN 5910-00-597-5824
NSN 5999-01-003-7289
NSN 5998-01-448-8471
NSN 5920-00-891-2771
NSN 5910-01-195-5429
NSN 5975-01-139-0121