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 2925-01-607-4340
NSN 5996-00-155-9309
NSN 5895-01-466-3427
NSN 6620-00-355-1734
NSN 5975-01-456-0113
NSN 5998-00-067-4316
NSN 5930-01-139-9636
NSN 6130-01-146-0999
NSN 5835-01-222-2437
NSN 6145-01-634-0388
NSN 5920-00-522-6525
NSN 6610-00-223-2558