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 6105-00-572-2439
NSN 5905-01-338-9217
NSN 6685-01-420-1778
NSN 5975-01-365-5440
NSN 5935-00-063-6267
NSN 6150-01-095-1750
NSN 5925-01-014-4779
NSN 5960-01-142-1995
NSN 6150-00-113-2259
NSN 6645-01-290-3930
NSN 5945-01-235-4093
NSN 5945-01-094-7727