Solderless Keystone & Chassis Mount 4-conductor 3.5mm stereo Jack
The connector requires a 1/2 inch hole for the chassis mount.
The connector also fits a keystone insert. The picture on the left shows the connector with the optional keystone insert.
The screw terminals provide a clean solderless termination for 18 to 30 gauge wire.
The 4-conductor TRRS can be used for devices, such as the iPhone, that use a 4-conductor 3.5mm connector.