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 5965-01-310-3053
NSN 6130-01-400-6123
NSN 5996-01-169-0913
NSN 5925-01-008-4732
NSN 5996-00-958-4244
NSN 6150-01-336-1653
NSN 6130-01-469-2113
NSN 5855-01-426-5589
NSN 5990-01-344-9118
NSN 5960-01-512-0233
NSN 6220-01-370-5980
NSN 5950-01-575-3392