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 5925-01-442-3792
NSN 6150-00-787-0369
NSN 6145-01-262-4781
NSN 5935-01-582-3817
NSN 6620-00-824-4609
NSN 5945-00-080-5764
NSN 6610-01-080-6922
NSN 5950-01-564-2719
NSN 5905-01-381-3742
NSN 6130-01-558-6762
NSN 5915-01-227-5722
NSN 5910-00-849-8602