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 5998-01-295-6886
NSN 6650-00-903-5419
NSN 6240-01-218-5187
NSN 5998-01-022-0753
NSN 5835-00-339-3020
NSN 5950-01-432-3454
NSN 5998-01-327-3865
NSN 5915-00-079-9900
NSN 6145-01-420-6132
NSN 5905-00-067-5256
NSN 5905-01-545-2845
NSN 5835-00-494-1701