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 5996-01-188-7934
NSN 5999-00-816-6536
NSN 5999-01-016-0255
NSN 6685-00-633-2328
NSN 5965-00-201-7479
NSN 6130-01-572-7933
NSN 5965-01-254-3622
NSN 5990-00-702-2873
NSN 6135-01-445-6589
NSN 6105-01-314-8603
NSN 6220-01-586-7741
NSN 5905-00-450-6332