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 5999-00-092-0512
NSN 5990-00-583-9920
NSN 6105-01-211-6897
NSN 5965-01-535-0428
NSN 5998-01-449-3425
NSN 2925-01-429-2235
NSN 6650-00-622-4991
NSN 5996-00-405-9093
NSN 5996-00-235-0823
NSN 7035-00-003-7518
NSN 6220-01-591-9268
NSN 6645-01-613-7389