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 5910-01-454-1891
NSN 5996-01-168-2746
NSN 5960-00-170-6916
NSN 6150-01-485-0669
NSN 6610-01-391-5092
NSN 5910-01-649-3398
NSN 5835-01-576-9013
NSN 5945-01-218-0804
NSN 2925-00-678-5502
NSN 5925-01-146-0432
NSN 5990-01-128-7599
NSN 5965-01-588-7092