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 6620-01-280-3516
NSN 5960-00-357-3043
NSN 6135-00-262-6807
NSN 5835-00-283-3616
NSN 6620-00-728-3445
NSN 6110-01-206-4187
NSN 5920-01-224-6031
NSN 5920-01-392-2247
NSN 5965-00-823-8623
NSN 5930-01-345-6490
NSN 6150-01-044-4505
NSN 5855-00-014-5008