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 5960-01-360-4107
NSN 6135-00-683-0536
NSN 6105-01-096-4883
NSN 5975-00-655-0761
NSN 5915-01-641-6139
NSN 6220-00-155-8007
NSN 6320-01-206-1055
NSN 5835-00-289-9080
NSN 5996-00-552-9902
NSN 4140-01-393-8958
NSN 6130-01-173-6334
NSN 5950-01-065-6435