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 5910-01-573-4829
NSN 6150-01-100-9736
NSN 5855-01-040-3881
NSN 6610-01-391-5092
NSN 5915-01-356-1770
NSN 5950-00-148-1448
NSN 5985-01-332-8476
NSN 5930-01-385-2877
NSN 6240-00-977-5599
NSN 6220-01-591-0039
NSN 5960-01-468-5785
NSN 5999-00-058-2684