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 6110-01-174-0654
NSN 6135-00-377-9165
NSN 5998-01-116-1187
NSN 5935-01-305-7661
NSN 5925-01-238-1294
NSN 5996-01-062-0807
NSN 6240-01-378-2213
NSN 5935-01-286-0687
NSN 2925-00-081-3547
NSN 6130-01-288-5467
NSN 5975-00-412-1333
NSN 6650-00-481-2474