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 6645-01-632-1127
NSN 6110-01-224-2097
NSN 5996-01-334-7837
NSN 6105-01-058-2040
NSN 5835-00-243-0594
NSN 6145-01-125-0974
NSN 5935-01-524-2218
NSN 6610-01-041-9296
NSN 2925-01-359-4027
NSN 2925-01-364-7926
NSN 4140-01-259-1392
NSN 6620-01-645-8717