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 7035-01-058-1935
NSN 5915-01-196-9426
NSN 5996-00-285-3727
NSN 5935-00-105-6784
NSN 5950-01-444-4588
NSN 6240-00-470-4662
NSN 6135-00-782-6988
NSN 6110-01-567-0775
NSN 6110-01-197-7917
NSN 4140-01-342-1715
NSN 5996-01-620-7742
NSN 6220-01-632-6033