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 5930-01-060-2909
NSN 5855-01-145-0323
NSN 6110-01-441-9589
NSN 6105-01-579-2813
NSN 6685-01-580-9640
NSN 5925-01-265-0832
NSN 5930-00-801-1275
NSN 6220-01-568-0844
NSN 5905-01-655-0684
NSN 5945-01-310-1896
NSN 6150-01-112-1094
NSN 5855-01-184-8089