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 5855-01-446-1936
NSN 5996-01-633-7979
NSN 6110-01-589-4243
NSN 5975-00-189-0093
NSN 7035-01-324-3839
NSN 6145-01-145-5177
NSN 6685-01-281-8860
NSN 6130-00-194-2748
NSN 5835-01-158-6878
NSN 7035-01-444-4240
NSN 5960-01-089-8155
NSN 6610-01-360-3564