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 6105-01-492-0615
NSN 5930-01-461-9864
NSN 5998-00-760-7399
NSN 6105-00-679-1588
NSN 6610-01-097-5073
NSN 5910-00-686-9041
NSN 5990-00-067-6791
NSN 6650-00-618-9398
NSN 5930-00-275-0558
NSN 5895-01-089-9999
NSN 5895-00-359-3834
NSN 5965-00-067-6780