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 6320-01-067-0474
NSN 5925-01-572-6279
NSN 5835-01-447-2544
NSN 6645-00-256-4072
NSN 7035-01-631-4095
NSN 5855-00-110-9341
NSN 5960-00-556-2621
NSN 5930-01-113-6457
NSN 6130-01-357-0551
NSN 5950-01-078-7970
NSN 5905-00-276-8597
NSN 5990-01-157-0441