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 6610-01-293-6579
NSN 5895-00-935-6168
NSN 5855-01-184-8089
NSN 6240-00-405-4847
NSN 6150-01-459-8412
NSN 5855-00-862-3345
NSN 5999-01-182-3076
NSN 7035-01-323-8262
NSN 6610-01-133-9812
NSN 5935-01-100-0382
NSN 6135-01-490-7704
NSN 5855-00-832-9341