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 6130-01-024-8292
NSN 5835-00-005-7909
NSN 5935-01-097-6721
NSN 5895-01-486-0968
NSN 6320-00-483-0451
NSN 6130-00-834-2764
NSN 6320-01-512-2031
NSN 6645-00-474-5689
NSN 5915-01-199-4192
NSN 5935-01-594-3702
NSN 6105-01-185-7982
NSN 6645-01-620-4837