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 5930-01-423-9415
NSN 5835-01-163-4215
NSN 5985-00-815-2900
NSN 7035-00-104-7613
NSN 5960-00-508-1913
NSN 5855-01-459-7508
NSN 6320-00-070-4544
NSN 6240-01-116-5988
NSN 5990-01-581-5103
NSN 6610-00-512-4183
NSN 5965-00-866-3371
NSN 5855-00-149-0766