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 5960-01-207-9544
NSN 5996-00-754-4057
NSN 5960-01-416-6187
NSN 6685-01-503-9189
NSN 6610-01-383-7419
NSN 5975-01-053-1331
NSN 5925-01-450-7047
NSN 6320-01-362-9518
NSN 5925-01-634-0664
NSN 6620-01-651-0720
NSN 6650-01-633-6872
NSN 5945-01-157-3655