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 5985-00-299-3510
NSN 5855-00-902-3069
NSN 5945-00-174-0810
NSN 4140-01-226-3314
NSN 7035-00-465-3298
NSN 5945-01-123-1558
NSN 6320-01-239-5700
NSN 7035-00-679-9027
NSN 5895-01-459-6138
NSN 6135-01-400-2947
NSN 5895-00-194-0658
NSN 6220-01-305-9709