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 5950-01-158-9101
NSN 5975-01-264-6696
NSN 6130-00-740-3884
NSN 6240-01-479-8340
NSN 5930-01-451-8540
NSN 5910-00-690-1619
NSN 6650-00-475-7746
NSN 6150-00-439-8762
NSN 5985-00-854-0849
NSN 5960-01-599-9821
NSN 6620-01-337-0652
NSN 5835-00-446-2944