Square nut; heavy
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 6240-01-474-3039
NSN 6130-01-277-1594
NSN 5998-01-324-5587
NSN 6220-00-557-3011
NSN 6110-00-998-4810
NSN 5960-01-425-1454
NSN 6650-00-119-3966
NSN 7035-00-631-3782
NSN 5920-01-634-0250
NSN 5835-00-092-1136
NSN 6320-01-056-1164
NSN 4140-01-462-5901