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 5965-01-265-1959
NSN 6620-01-431-9176
NSN 6220-01-044-3378
NSN 6220-00-166-9795
NSN 7035-01-633-9537
NSN 5998-00-932-5589
NSN 5945-01-463-7332
NSN 5895-01-141-4945
NSN 5855-00-167-7893
NSN 6650-00-227-8743
NSN 5855-00-688-9954
NSN 5835-01-055-6063