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 5855-01-063-6340
NSN 6610-01-161-4835
NSN 5960-00-139-9416
NSN 4140-01-657-9191
NSN 5960-01-528-1147
NSN 5950-01-433-1561
NSN 6685-00-072-7322
NSN 5965-00-716-7078
NSN 5965-00-159-7643
NSN 6645-01-400-2119
NSN 6110-01-421-1777
NSN 6320-01-171-3238