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 5945-01-266-5773
NSN 5996-00-601-6690
NSN 7035-01-263-5463
NSN 5910-01-158-5003
NSN 5915-01-651-4471
NSN 6110-00-191-9225
NSN 5996-01-268-3404
NSN 6650-00-950-4107
NSN 5895-00-203-2379
NSN 5935-00-094-6862
NSN 6240-00-573-4716
NSN 5990-01-581-5103