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 2925-00-147-8150
NSN 5965-00-170-8676
NSN 2925-00-631-0548
NSN 5996-01-413-1413
NSN 5895-01-477-5998
NSN 5999-01-265-9158
NSN 5945-01-258-1457
NSN 6145-01-273-0077
NSN 5925-01-054-2340
NSN 5965-01-200-6613
NSN 6620-00-322-2832
NSN 5960-00-241-2911