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 5996-01-462-0112
NSN 5985-01-461-3113
NSN 6135-01-100-3593
NSN 6145-01-579-3510
NSN 5990-01-116-2181
NSN 6135-00-837-5331
NSN 5998-01-188-7341
NSN 5930-00-892-1668
NSN 6650-01-648-3903
NSN 5925-01-279-0011
NSN 5895-01-438-0563
NSN 5910-01-252-2317