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 5950-01-155-2925
NSN 6620-01-198-9448
NSN 5910-01-468-5891
NSN 6320-01-435-5991
NSN 2925-00-502-3768
NSN 5935-00-221-3720
NSN 6620-00-928-0227
NSN 5915-01-346-1278
NSN 5920-01-634-0250
NSN 6645-01-023-8020
NSN 5920-00-192-6565
NSN 5960-01-168-5010