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 5935-00-169-7263
NSN 6610-01-164-4963
NSN 6130-01-487-3637
NSN 7035-00-286-6221
NSN 7035-01-269-5700
NSN 6645-00-574-9712
NSN 4140-01-203-6091
NSN 6105-01-502-1528
NSN 6110-00-202-1021
NSN 6135-00-958-7981
NSN 5855-00-921-6589
NSN 6130-01-305-5971