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 5945-00-925-2596
NSN 5835-01-456-3922
NSN 5965-00-400-6228
NSN 4140-00-052-2304
NSN 6220-01-514-8511
NSN 6135-01-177-3552
NSN 7035-00-206-5600
NSN 5960-00-195-4554
NSN 6645-00-356-5705
NSN 5945-01-155-7388
NSN 6130-01-524-7102
NSN 5915-00-877-7338