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 5945-01-440-9992
NSN 6645-01-391-6492
NSN 5945-00-193-3584
NSN 6150-01-340-2000
NSN 6105-01-356-0858
NSN 5895-00-504-3210
NSN 6150-00-462-3537
NSN 5960-00-871-3950
NSN 6220-00-186-8565
NSN 6220-01-339-2633
NSN 6240-00-445-4765
NSN 6240-00-266-6258