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 5985-01-101-6880
NSN 6650-00-758-7485
NSN 6105-00-134-5605
NSN 5999-01-285-2469
NSN 6320-01-177-3192
NSN 6135-01-423-3915
NSN 6130-01-168-8507
NSN 5915-00-543-9675
NSN 4140-01-249-7263
NSN 5835-00-833-7080
NSN 2925-01-643-8395
NSN 6110-00-173-5889