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 5998-01-088-6809
NSN 6150-01-555-8968
NSN 5998-00-684-8186
NSN 6620-01-265-2887
NSN 5998-01-254-3073
NSN 5925-01-489-2791
NSN 6650-00-826-7396
NSN 5999-01-074-8022
NSN 6135-00-461-3590
NSN 5920-01-541-1643
NSN 6110-00-288-4179
NSN 6110-01-113-5707