Audio jack sockets come with gold plated contacts
CLIFF ELECTRONICS Audio jack sockets with gold plated contacts are suitable for low level signals and high-surge voltages. Devices are available in two diameters, 6.3mm or 3.5mm to mate with the most popular jack plug sizes. Products are available in stereo or mono form, may be PC or panel mounted, have on-board switch contacts and are available with an internal or external thread. Complementary accessories include black or grey combined nut and bezel, EMI/RFI screen (6.3mm diameter only) and a recessed mounting plate to facilitate flush mounting of the socket.