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 5855-00-100-9003
NSN 5998-00-193-8923
NSN 5930-00-788-9942
NSN 5945-00-038-7776
NSN 6150-01-033-5747
NSN 5999-01-417-3028
NSN 6105-00-235-7982
NSN 5855-01-364-4478
NSN 5985-01-418-4808
NSN 5999-01-076-9815
NSN 5920-01-655-0406
NSN 5965-01-475-3024