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 5960-00-344-9588
NSN 5910-00-573-5802
NSN 5930-01-385-5890
NSN 5835-01-102-4451
NSN 5835-00-327-6192
NSN 5999-01-202-5976
NSN 6220-01-431-7319
NSN 6650-00-495-5210
NSN 5925-00-369-7747
NSN 5935-00-402-2042
NSN 6240-00-966-3831
NSN 5999-00-264-7089