The Afnor socket is a low-pressure device with backstop that enables the supply of power to a device or measuring instrument by insertion at a quick-connect coupling. Materials used: chrome-plated CW614N brass for the body and other parts, plastic material for the outer ring nut, C98 steel for springs, food-grade NBR or VITON rubber for gaskets, polycarbonate for labels, stainless steel for the panel.