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 5996-01-489-5494
NSN 5910-01-202-8330
NSN 6610-01-023-6073
NSN 6685-00-168-9735
NSN 5975-01-459-4832
NSN 5895-00-227-1002
NSN 5915-01-194-1110
NSN 6620-01-535-6925
NSN 5935-01-369-5210
NSN 6685-01-646-3973
NSN 5835-00-707-6266
NSN 6110-00-137-2348