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 6650-01-529-6416
NSN 5835-00-683-4612
NSN 6240-00-677-0305
NSN 6620-01-170-8270
NSN 5996-01-247-4407
NSN 6620-00-406-7694
NSN 5895-00-796-9405
NSN 5985-01-123-8667
NSN 6620-00-952-4278
NSN 5960-00-188-8648
NSN 7035-01-189-7367
NSN 5895-00-009-9152