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 6685-01-445-4301
NSN 5835-01-198-2221
NSN 5945-01-018-7761
NSN 6110-00-846-9413
NSN 5945-01-051-6309
NSN 6220-01-634-0660
NSN 6130-01-422-0563
NSN 6130-00-986-1675
NSN 7035-01-494-5832
NSN 6620-01-231-4208
NSN 7035-01-023-1008
NSN 6145-00-617-4032