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 6145-01-478-1722
NSN 5996-01-113-8944
NSN 5930-01-626-3869
NSN 5920-01-216-8022
NSN 6685-01-318-6540
NSN 6110-00-961-5204
NSN 5835-01-200-7153
NSN 5998-01-333-2088
NSN 5965-00-201-7479
NSN 6110-01-534-4944
NSN 6610-01-049-2661
NSN 5945-01-363-6287