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 4140-01-500-9197
NSN 5835-01-346-9575
NSN 6135-01-581-8843
NSN 5998-00-169-9694
NSN 5930-00-151-4787
NSN 6110-00-223-8684
NSN 6685-00-766-8844
NSN 5835-00-707-6266
NSN 5905-00-142-3831
NSN 5855-01-103-8650
NSN 6650-01-583-7651
NSN 5920-01-413-7292