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 5895-01-017-7198
NSN 6240-01-246-3248
NSN 5920-00-636-4713
NSN 6220-01-317-4389
NSN 5996-00-166-0037
NSN 6130-01-493-6651
NSN 5910-00-687-1254
NSN 5998-00-167-7436
NSN 6320-01-438-6280
NSN 6685-01-658-6624
NSN 5996-00-244-9536
NSN 6645-01-192-3061