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 6610-01-546-3879
NSN 6145-00-904-3811
NSN 5950-00-740-8897
NSN 6130-01-017-9600
NSN 6145-01-459-8150
NSN 5915-01-370-6417
NSN 5935-00-495-2022
NSN 5910-00-288-5979
NSN 5999-00-069-4321
NSN 5950-00-189-0551
NSN 5945-01-056-5035
NSN 6105-00-136-9158