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 5935-01-418-4471
NSN 5905-01-388-2560
NSN 6130-01-454-7057
NSN 5975-01-321-3999
NSN 6620-01-588-9278
NSN 5945-00-426-9631
NSN 5895-01-230-5391
NSN 5960-01-599-9821
NSN 6610-00-536-4977
NSN 5950-00-429-2663
NSN 5855-00-560-0110
NSN 5945-01-279-1690