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 5945-01-212-7414
NSN 5895-01-044-4987
NSN 5935-01-003-9683
NSN 5998-01-333-8044
NSN 6220-01-116-2411
NSN 5905-01-113-9729
NSN 5910-01-275-2952
NSN 5996-01-094-9754
NSN 6685-01-049-6218
NSN 5930-01-387-6980
NSN 6320-01-631-7828
NSN 6130-01-272-8706