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 5835-01-241-1090
NSN 5925-01-492-9847
NSN 5975-01-650-8317
NSN 6240-01-512-8129
NSN 6320-01-436-9228
NSN 6110-00-239-6337
NSN 6145-01-304-0684
NSN 5925-01-097-7046
NSN 6145-00-930-4972
NSN 5910-01-023-9542
NSN 5855-01-589-9339
NSN 5925-00-515-2438