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 6105-01-441-1184
NSN 5960-01-335-1622
NSN 5935-01-234-4825
NSN 6645-01-473-3752
NSN 5945-01-481-3005
NSN 6320-01-538-6737
NSN 5855-00-004-0904
NSN 5855-00-149-0766
NSN 4140-01-065-3981
NSN 6650-00-410-3582
NSN 6135-01-456-2924
NSN 6650-01-024-9554