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 5999-01-254-2763
NSN 5895-00-410-9986
NSN 6150-00-772-7525
NSN 4140-01-614-6091
NSN 5935-00-398-1584
NSN 5915-01-087-6686
NSN 5915-01-169-9882
NSN 5945-00-094-8178
NSN 5975-01-571-8743
NSN 5855-00-763-2155
NSN 2925-01-400-2286
NSN 5960-00-957-0951