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 6650-01-416-0473
NSN 5965-01-142-8044
NSN 5915-00-556-1169
NSN 5905-01-539-8994
NSN 6150-00-053-9267
NSN 5945-01-634-0588
NSN 5895-01-414-0679
NSN 5905-00-851-4732
NSN 6135-01-238-2878
NSN 5998-01-396-8324
NSN 5895-01-351-3842
NSN 5905-00-057-5482