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 5895-01-106-4161
NSN 5945-01-429-9534
NSN 5950-00-153-0932
NSN 5975-00-177-6408
NSN 5915-01-650-1733
NSN 6110-01-320-4818
NSN 5895-01-481-4261
NSN 4140-01-479-4257
NSN 6650-01-612-1832
NSN 6105-01-371-2458
NSN 5835-01-362-0305
NSN 6135-01-210-8715