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 5975-01-005-5102
NSN 5910-01-482-6171
NSN 5910-01-149-5122
NSN 5930-00-139-5002
NSN 5920-01-412-0629
NSN 5965-01-147-5289
NSN 4140-00-465-7668
NSN 5998-00-984-4037
NSN 6130-00-172-2301
NSN 5945-01-105-0198
NSN 5895-01-538-2313
NSN 5935-01-179-3498