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 5935-01-271-6482
NSN 5985-01-188-7281
NSN 6650-00-834-9062
NSN 6240-01-176-9037
NSN 6610-01-108-8914
NSN 5835-01-414-3258
NSN 6105-01-623-8415
NSN 6130-01-609-8124
NSN 5895-00-202-4961
NSN 5835-00-160-3126
NSN 5950-00-179-6796
NSN 5945-00-427-9427