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 5920-01-169-7888
NSN 6130-01-063-0194
NSN 5855-01-232-9440
NSN 6620-01-010-0518
NSN 5930-00-470-1554
NSN 6150-01-432-1020
NSN 5925-01-610-3305
NSN 6620-00-932-7328
NSN 5920-00-427-7267
NSN 6110-01-529-7753
NSN 6685-01-608-5137
NSN 5935-01-600-4141