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 6105-01-186-6988
NSN 5945-01-147-8073
NSN 2925-01-562-8051
NSN 6110-01-187-0603
NSN 5895-01-415-2922
NSN 5855-01-453-6384
NSN 6610-00-825-5774
NSN 7035-01-034-4443
NSN 6320-01-246-4390
NSN 6620-01-225-1475
NSN 5925-01-469-8462
NSN 5905-01-367-6364