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 6105-00-702-1333
NSN 5990-01-185-5346
NSN 6645-01-302-3923
NSN 5915-00-995-8646
NSN 4140-01-359-2895
NSN 6110-01-443-3279
NSN 5895-01-432-1689
NSN 6135-01-101-5039
NSN 5895-01-042-4054
NSN 5960-01-333-1828
NSN 5915-01-565-3091
NSN 5990-00-099-0822