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 5835-00-111-2953
NSN 6130-00-215-0661
NSN 5945-00-030-2003
NSN 6610-01-088-5871
NSN 5925-00-259-7486
NSN 6620-01-386-5914
NSN 5990-01-493-4039
NSN 5990-01-164-0220
NSN 6645-00-192-1152
NSN 7035-00-232-4043
NSN 6685-00-634-9964
NSN 6320-01-157-9076