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 6105-00-003-9716
NSN 6150-00-673-4724
NSN 5910-00-194-8777
NSN 6645-01-518-1107
NSN 5895-00-922-3034
NSN 5895-01-037-2004
NSN 6645-01-106-4303
NSN 5950-00-102-5191
NSN 7035-01-571-3177
NSN 6610-01-400-3880
NSN 5998-01-029-4046
NSN 5996-00-592-6427