Design mil-dtl-01222 type iii style a or b
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 5835-00-484-1529
NSN 5945-00-085-2281
NSN 6650-01-437-2570
NSN 5925-00-234-0211
NSN 5910-01-294-4657
NSN 7035-01-055-1696
NSN 5930-00-495-5224
NSN 5905-01-111-9559
NSN 6320-01-300-7994
NSN 7035-00-616-4410
NSN 6650-01-189-4433
NSN 5910-01-392-1396