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 2925-01-288-2091
NSN 5998-01-411-1315
NSN 5930-01-268-7729
NSN 5990-01-487-0871
NSN 2925-01-607-4340
NSN 5855-01-023-3727
NSN 2925-00-048-7172
NSN 5950-00-270-4701
NSN 7035-01-189-7367
NSN 5835-01-535-0948
NSN 5925-00-838-4425
NSN 5960-01-323-6432