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 5905-01-208-7954
NSN 5985-01-479-7506
NSN 5895-00-518-1593
NSN 5965-01-502-7006
NSN 5835-01-100-3265
NSN 6220-00-969-2053
NSN 5895-01-112-7609
NSN 5915-00-042-5613
NSN 5985-01-494-9899
NSN 6685-01-295-5531
NSN 5965-01-553-1938
NSN 5925-01-598-1186