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 5960-01-083-9224
NSN 6105-01-341-3566
NSN 5960-01-498-0572
NSN 5895-01-584-6842
NSN 5930-01-518-9891
NSN 5930-00-794-9097
NSN 5990-00-362-1453
NSN 5905-01-367-6746
NSN 5930-00-289-9901
NSN 5910-01-352-0917
NSN 6685-00-518-4237
NSN 6150-01-492-6433