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 6145-00-485-6812
NSN 2925-00-838-7164
NSN 5960-00-688-7510
NSN 2925-00-636-4026
NSN 5895-01-452-0805
NSN 6685-01-401-5360
NSN 5999-00-235-3489
NSN 6240-01-406-5345
NSN 6150-00-189-0292
NSN 4140-00-224-9149
NSN 4140-00-155-8012
NSN 6610-00-119-2839