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 5975-01-411-6054
NSN 5835-01-537-1228
NSN 6220-01-436-7131
NSN 5920-00-061-5500
NSN 5950-00-589-7810
NSN 7035-01-624-6433
NSN 5975-00-075-5191
NSN 5910-01-062-5399
NSN 5965-01-495-1170
NSN 5935-01-058-3214
NSN 5975-01-517-0631
NSN 6145-01-194-3086