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 7035-01-128-7431
NSN 6650-00-455-2416
NSN 6130-01-382-0607
NSN 6240-01-230-2679
NSN 6240-01-391-6833
NSN 5930-01-348-8592
NSN 5998-00-062-0024
NSN 5835-01-143-9143
NSN 6220-01-437-8579
NSN 6145-01-569-6577
NSN 5998-01-535-9884
NSN 5905-01-053-6493