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 5996-00-432-8578
NSN 6320-01-422-1212
NSN 6610-00-704-4022
NSN 5998-01-183-9238
NSN 5975-00-418-4967
NSN 5985-01-465-0804
NSN 5950-01-398-9557
NSN 6145-01-313-1420
NSN 6130-01-141-7038
NSN 5950-00-678-1730
NSN 5930-00-563-7944
NSN 5930-00-950-7917