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 4140-01-020-6026
NSN 6620-00-140-8644
NSN 6150-00-854-2607
NSN 5925-00-529-3950
NSN 5835-00-280-8494
NSN 5990-01-113-8121
NSN 6220-01-357-9891
NSN 6220-01-571-7199
NSN 5895-00-518-4954
NSN 5935-01-433-3783
NSN 5998-01-292-9035
NSN 5996-01-523-3834