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 7035-00-478-4596
NSN 5990-00-803-0490
NSN 5950-01-579-2848
NSN 5965-01-181-5706
NSN 4140-01-527-2011
NSN 6240-01-347-0072
NSN 5975-01-498-8637
NSN 6105-01-562-7143
NSN 5999-01-421-5739
NSN 5950-01-323-6355
NSN 5855-01-416-1527
NSN 5930-01-118-3451