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 5950-01-247-6501
NSN 5945-01-052-3694
NSN 5915-00-853-8583
NSN 6610-00-925-5064
NSN 6240-01-451-1409
NSN 6685-01-080-6045
NSN 5998-00-466-2646
NSN 5998-00-926-3730
NSN 5998-00-171-8941
NSN 6135-00-593-6831
NSN 6240-01-332-6892
NSN 5990-00-441-7974