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 5935-00-866-4563
NSN 6105-01-389-2003
NSN 6320-00-480-7922
NSN 6145-00-119-8201
NSN 6620-01-525-2108
NSN 5915-01-136-7297
NSN 5920-01-362-0680
NSN 7035-00-897-4994
NSN 6135-01-508-6083
NSN 5975-01-434-1764
NSN 5935-00-206-7217
NSN 6610-01-236-8359