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 6650-01-207-0039
NSN 5935-01-020-2839
NSN 5835-01-645-2892
NSN 6240-01-572-4233
NSN 5855-01-020-7982
NSN 6685-00-531-7120
NSN 2925-00-824-2186
NSN 6150-01-562-6145
NSN 5965-01-423-8543
NSN 6150-01-011-4857
NSN 6130-00-233-7639
NSN 5990-01-152-3974