The D20418-42 is a D-sub Female Screw Lock designed to retain the same size mated connectors together or to secure the connector to a rack/panel. Screw lock may be used on plugs or sockets. This female screw lock consists of one #4-40 hole in the top, two flat washers to accommodate different panel thicknesses, one lock-washer and one #4-40 nut. This screw lock comes with two washers, lockwashers, hex nuts and nuts are steel with zinc plating and yellow chromate finish.
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