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 5905-00-813-6728
NSN 2925-00-231-8041
NSN 6110-01-472-6987
NSN 6220-00-178-8536
NSN 5855-01-023-3727
NSN 5985-01-185-1530
NSN 6610-00-654-9877
NSN 7035-01-577-3778
NSN 6650-00-246-3751
NSN 5945-00-639-9848
NSN 6135-01-618-8314
NSN 5985-00-798-4537