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 5925-01-418-6345
NSN 6135-01-647-5692
NSN 5835-01-544-5183
NSN 5835-01-259-0859
NSN 6220-00-925-0522
NSN 5910-01-443-1968
NSN 5996-01-386-6394
NSN 5998-00-373-2560
NSN 7035-00-517-8232
NSN 5905-01-342-0254
NSN 5925-00-813-6810
NSN 5915-01-376-5514