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 5930-01-142-1315
NSN 5950-01-225-3352
NSN 6150-00-346-8150
NSN 7035-00-620-6835
NSN 5855-01-462-4258
NSN 2925-01-467-1192
NSN 5965-01-028-6206
NSN 5999-01-473-8346
NSN 5996-01-037-2084
NSN 5935-01-486-7969
NSN 5950-01-092-5274
NSN 6110-01-167-8906