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 6150-00-985-3385
NSN 4140-01-024-9414
NSN 5930-01-340-5411
NSN 5945-01-038-1502
NSN 2925-00-447-0788
NSN 2925-01-599-1901
NSN 5965-01-053-7168
NSN 5925-01-191-4285
NSN 6685-00-523-1500
NSN 5855-01-342-3824
NSN 5915-00-813-6822
NSN 6130-01-375-6703