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 2925-00-644-0028
NSN 5905-01-457-1989
NSN 5835-01-422-2399
NSN 7035-00-445-9657
NSN 5996-01-417-3139
NSN 2925-00-152-1825
NSN 6220-01-340-6655
NSN 5855-01-418-0089
NSN 5925-01-155-3721
NSN 5855-00-688-9954
NSN 6620-01-253-0374
NSN 5855-01-406-4821