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 6110-01-169-2816
NSN 5835-01-079-3658
NSN 6135-01-309-5765
NSN 5915-01-356-4195
NSN 5915-00-794-0490
NSN 5990-01-294-6198
NSN 6130-01-602-8991
NSN 5960-01-495-0859
NSN 6645-00-935-7046
NSN 5965-00-337-0777
NSN 6650-01-543-7048
NSN 6135-00-756-6149