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 6105-01-126-2771
NSN 6645-01-329-9591
NSN 5998-01-331-6463
NSN 5935-00-271-3205
NSN 6145-01-400-1030
NSN 5975-01-634-0678
NSN 4140-00-351-7085
NSN 5835-01-012-1436
NSN 6620-01-565-3187
NSN 5975-00-665-3644
NSN 6145-01-519-3281
NSN 5905-01-473-0506