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 6685-01-098-5970
NSN 5960-01-391-4701
NSN 5920-01-462-0055
NSN 5996-01-246-4675
NSN 6240-01-461-8193
NSN 6130-01-004-0723
NSN 5999-01-319-3204
NSN 6650-00-726-4242
NSN 5990-01-299-2014
NSN 5930-01-634-0659
NSN 5925-00-272-8959
NSN 5950-01-505-0946