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 6610-00-255-8770
NSN 5965-00-023-0944
NSN 5925-01-615-4075
NSN 5985-01-145-4673
NSN 6610-01-023-1918
NSN 5925-01-428-9941
NSN 5895-01-473-8327
NSN 6610-01-185-5832
NSN 5990-00-615-5413
NSN 4140-01-511-0270
NSN 5920-01-501-5174
NSN 5996-00-667-4295