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 6110-01-614-0007
NSN 5920-01-270-0615
NSN 5835-01-351-8429
NSN 6105-01-012-7082
NSN 5930-01-322-9525
NSN 5905-01-292-3811
NSN 6610-01-435-5425
NSN 5945-01-009-8418
NSN 6105-00-448-4518
NSN 5905-01-360-6055
NSN 5930-01-572-5919
NSN 5915-00-553-3650