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 5960-01-089-8155
NSN 5975-00-258-3056
NSN 6240-01-316-9882
NSN 5910-01-135-2419
NSN 5910-01-127-8513
NSN 6685-01-616-6133
NSN 6110-01-487-8867
NSN 5996-00-167-7675
NSN 6130-00-864-4713
NSN 7035-00-455-7666
NSN 5920-01-386-3115
NSN 5935-01-169-8791