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 5975-01-043-8573
NSN 6240-01-579-3213
NSN 6150-01-019-5194
NSN 6135-00-016-0071
NSN 6150-00-202-9150
NSN 6105-01-042-6633
NSN 5835-01-221-8811
NSN 5975-01-014-3921
NSN 5925-00-589-8989
NSN 5915-00-072-6926
NSN 5835-01-300-4226
NSN 5925-01-338-4773