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 6220-01-423-0696
NSN 5910-00-306-5980
NSN 5930-01-421-1798
NSN 5990-01-386-5561
NSN 5965-01-215-0993
NSN 6110-00-320-0785
NSN 6685-01-498-4234
NSN 5975-00-189-9949
NSN 6320-00-925-0558
NSN 6240-00-766-8034
NSN 5996-01-023-3317
NSN 5835-01-432-1277