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 7035-01-474-2768
NSN 6685-01-149-2843
NSN 6685-00-187-5890
NSN 6130-00-264-4935
NSN 6320-00-894-1644
NSN 5905-00-279-2200
NSN 5945-01-484-6413
NSN 5985-00-163-1055
NSN 5985-00-862-6721
NSN 5990-00-467-7431
NSN 5930-01-605-3184
NSN 6135-01-282-4326