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 5960-01-262-0354
NSN 7035-01-379-8777
NSN 6105-01-167-0758
NSN 5950-01-079-2556
NSN 5855-01-312-5160
NSN 5950-01-375-8656
NSN 5985-01-006-5791
NSN 5935-01-014-6185
NSN 5950-00-476-9678
NSN 5935-01-058-4106
NSN 5915-00-812-9484
NSN 6130-00-639-0666