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 6130-01-364-7183
NSN 5960-01-495-0859
NSN 5990-00-206-3753
NSN 2925-01-255-6394
NSN 5965-00-739-2063
NSN 6685-01-503-3159
NSN 7035-01-567-6895
NSN 5996-01-429-0390
NSN 6145-01-604-8619
NSN 5975-01-533-8233
NSN 5965-00-938-2814
NSN 5920-01-541-5030