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 6130-00-883-9333
NSN 5999-01-066-2009
NSN 6105-01-649-6502
NSN 6645-01-475-8283
NSN 5915-01-258-3966
NSN 5950-01-219-8474
NSN 6110-01-382-9158
NSN 6320-00-456-2092
NSN 5935-01-358-7099
NSN 5910-01-117-0001
NSN 6110-00-728-0680
NSN 4140-01-314-7365