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 6610-01-013-8922
NSN 5975-00-872-7532
NSN 6110-01-165-1669
NSN 6105-00-974-8237
NSN 5998-00-823-5659
NSN 6220-01-068-3100
NSN 6110-00-023-3661
NSN 5915-01-512-8851
NSN 5960-01-056-4982
NSN 5950-01-228-8667
NSN 6685-01-521-3660
NSN 5975-00-256-9436