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 5910-01-501-9988
NSN 5960-00-338-9164
NSN 6240-01-322-2783
NSN 6645-01-049-0972
NSN 5945-00-240-3228
NSN 6240-01-141-2219
NSN 5990-01-608-3505
NSN 5985-01-419-7000
NSN 5905-00-067-6208
NSN 5998-00-230-9166
NSN 6135-00-134-6648
NSN 5910-01-378-7026