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 6685-00-829-2797
NSN 5965-01-388-3492
NSN 5990-01-558-4536
NSN 6610-01-224-7247
NSN 5930-01-368-2598
NSN 6650-00-071-8184
NSN 5920-01-106-1137
NSN 5960-01-215-0992
NSN 5965-00-068-4812
NSN 7035-01-408-8698
NSN 5999-01-181-5463
NSN 6685-00-159-0724