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 6645-01-050-9794
NSN 6685-01-408-7758
NSN 5950-01-123-1906
NSN 6650-00-389-4111
NSN 5996-01-258-2324
NSN 2925-00-169-3775
NSN 5855-00-149-0766
NSN 5835-01-576-9013
NSN 5975-00-374-5245
NSN 7035-01-350-4247
NSN 5855-00-237-4088
NSN 6150-01-588-2305