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 5920-00-043-0004
NSN 6110-01-508-1782
NSN 5985-01-153-0781
NSN 5985-01-528-8001
NSN 5855-01-571-6715
NSN 2925-01-537-5310
NSN 6620-01-054-9346
NSN 6135-01-380-4396
NSN 5935-01-360-6240
NSN 2925-01-545-2717
NSN 6610-01-476-7412
NSN 5945-01-125-5798