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 6320-01-316-0615
NSN 5960-01-322-8417
NSN 6105-01-591-3044
NSN 5985-01-459-4060
NSN 5855-01-463-0730
NSN 5895-01-012-9335
NSN 6685-01-426-8929
NSN 5910-00-499-2235
NSN 6320-00-456-0836
NSN 5998-01-082-3537
NSN 5905-01-224-8493
NSN 6110-01-083-6797