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 6650-01-446-2025
NSN 7035-01-158-8860
NSN 2925-00-494-5537
NSN 6685-01-382-7374
NSN 5920-01-179-9739
NSN 2925-01-141-7563
NSN 6150-01-550-6342
NSN 5930-01-141-7740
NSN 2925-01-444-6676
NSN 6610-00-139-1105
NSN 5930-01-481-5220
NSN 5996-00-652-0835