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 6685-00-379-2508
NSN 6110-01-327-3670
NSN 5945-00-228-6921
NSN 5985-01-544-9514
NSN 5950-01-069-4880
NSN 4140-01-416-2798
NSN 6320-00-004-9158
NSN 6650-00-569-1762
NSN 6620-01-633-8443
NSN 5935-00-253-6548
NSN 5925-01-465-9581
NSN 5950-00-030-3734