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 5950-00-177-3055
NSN 6110-00-105-0428
NSN 7035-01-386-3004
NSN 5930-00-455-9883
NSN 5920-00-100-2582
NSN 6685-01-619-6579
NSN 5895-01-435-6624
NSN 6650-01-352-2979
NSN 5965-01-251-9480
NSN 5915-01-576-5862
NSN 5920-00-835-9298
NSN 2925-00-159-9003