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 5855-01-131-9336
NSN 5998-01-343-8353
NSN 5999-01-385-5494
NSN 6240-00-902-9310
NSN 2925-01-424-9341
NSN 5960-00-890-9032
NSN 6145-01-275-0533
NSN 5950-01-523-1798
NSN 5950-01-467-2426
NSN 5920-01-604-2297
NSN 6240-01-071-2127
NSN 5855-00-494-9581