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 6130-00-621-2202
NSN 5960-00-284-4190
NSN 5945-01-437-7411
NSN 5996-00-683-5176
NSN 6110-01-095-2072
NSN 5945-00-627-3699
NSN 6650-01-462-0830
NSN 6685-01-633-6915
NSN 7035-01-619-4366
NSN 5960-01-094-7569
NSN 5920-00-888-7737
NSN 6685-01-654-4653