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 5985-01-364-7879
NSN 6610-00-089-6950
NSN 6650-01-420-9247
NSN 2925-00-020-7524
NSN 5945-00-553-9963
NSN 6645-01-421-2445
NSN 5855-01-406-4821
NSN 5930-00-200-9738
NSN 6145-01-251-0076
NSN 5960-00-691-6382
NSN 6220-01-445-3465
NSN 5925-01-317-8441