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 5935-01-571-6484
NSN 6135-00-223-9563
NSN 6610-00-531-8871
NSN 5920-01-464-8480
NSN 5990-01-572-3137
NSN 5998-01-567-4855
NSN 5950-01-217-3125
NSN 6645-00-273-1203
NSN 5915-00-283-8670
NSN 5835-00-698-9824
NSN 4140-00-564-3722
NSN 7035-00-997-6212