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 5996-00-807-7754
NSN 5998-00-227-2118
NSN 5855-01-462-8964
NSN 2925-00-099-4030
NSN 6610-00-578-6790
NSN 5950-01-596-5787
NSN 5855-01-600-2405
NSN 5975-00-611-0421
NSN 5985-01-545-3537
NSN 5835-01-495-0595
NSN 6645-01-141-7737
NSN 6220-00-412-2741