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 6130-00-091-1103
NSN 5910-01-533-2403
NSN 6135-01-222-5464
NSN 5925-00-599-6339
NSN 5945-01-389-3115
NSN 5945-01-092-8098
NSN 6220-00-200-7888
NSN 5855-00-797-8217
NSN 5920-00-043-5138
NSN 5975-01-032-1616
NSN 5950-01-408-2719
NSN 6105-00-142-5901