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 6650-01-024-9554
NSN 6685-01-382-8646
NSN 5915-00-081-5320
NSN 6110-01-176-7529
NSN 5990-00-224-9408
NSN 5985-00-281-0810
NSN 5990-00-882-9162
NSN 6105-00-153-7967
NSN 6650-01-199-8589
NSN 5965-00-239-3471
NSN 5915-00-229-1474
NSN 6240-00-433-2707