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 7035-01-181-2705
NSN 5998-01-588-2333
NSN 5996-01-211-2281
NSN 5835-00-092-1136
NSN 5996-01-275-0706
NSN 5985-00-213-7171
NSN 5910-01-424-3729
NSN 5930-01-568-0657
NSN 6150-01-044-6909
NSN 5855-01-388-2424
NSN 6610-00-097-3367
NSN 5950-01-197-2196