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 5996-00-361-9901
NSN 5835-00-475-9271
NSN 5895-01-176-9881
NSN 5990-01-481-5274
NSN 5925-00-155-2587
NSN 6150-00-834-8795
NSN 6130-00-361-7114
NSN 6220-01-485-2381
NSN 6320-01-449-1014
NSN 6110-01-658-1830
NSN 5999-00-343-6770
NSN 5835-01-512-4834