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 5985-01-622-7406
NSN 5835-01-399-5820
NSN 6105-00-808-1587
NSN 5895-01-182-2208
NSN 5985-01-175-4889
NSN 5990-01-392-5682
NSN 6220-01-634-0660
NSN 5930-00-347-5238
NSN 5965-00-246-5612
NSN 5895-01-527-9280
NSN 2925-00-241-2481
NSN 5965-01-005-6617