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 6240-01-401-5340
NSN 5999-01-388-5927
NSN 6650-00-434-0188
NSN 6620-01-446-6571
NSN 6220-01-115-8916
NSN 5895-00-100-6970
NSN 4140-01-514-7549
NSN 5855-01-147-6024
NSN 5965-01-199-4242
NSN 2925-01-371-6853
NSN 5925-01-340-1185
NSN 6610-00-100-1195