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 5895-01-059-7757
NSN 6650-01-313-9752
NSN 5975-01-424-6359
NSN 6220-01-279-1331
NSN 5975-01-488-1072
NSN 6135-01-428-8821
NSN 5950-00-694-8701
NSN 6240-01-339-0069
NSN 6685-00-291-1416
NSN 6610-00-186-9180
NSN 5905-00-118-1040
NSN 5935-01-367-6289