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 6650-01-062-8105
NSN 5930-00-401-6786
NSN 5925-01-440-7154
NSN 5930-01-606-4866
NSN 5990-01-608-3505
NSN 6610-00-953-4944
NSN 6145-01-560-9846
NSN 5920-01-609-6762
NSN 5999-01-445-3414
NSN 5895-01-323-6413
NSN 5945-01-339-4844
NSN 5910-00-238-3076