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 5925-00-468-2757
NSN 5985-01-229-3986
NSN 6320-00-456-0836
NSN 7035-01-145-5059
NSN 5835-00-564-0057
NSN 5990-00-165-1809
NSN 5835-01-540-4995
NSN 6145-01-152-9462
NSN 5975-01-578-5921
NSN 2925-01-049-8906
NSN 5905-00-707-5032
NSN 5930-01-461-7589