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 5996-01-167-3922
NSN 5965-01-252-2944
NSN 5910-00-483-0565
NSN 5950-01-076-6459
NSN 5930-00-969-4089
NSN 6130-01-181-3373
NSN 5935-00-857-2917
NSN 6145-00-060-8056
NSN 6150-00-951-3420
NSN 5835-01-174-7700
NSN 6105-00-851-6481
NSN 5998-00-066-3265