The speakON panel mount connectors are the standard chassis connectors for loudspeaker / amplifier interconnections. They feature a unique metal locking system, making contact only once fully locked. The speakON receptacles are robust, versatile and easy to terminate. 4 pole chassis connector, black D-size flange, countersunk thru holes, 3/16" flat tabs. This connector is fully compliant to the device standard IEC 62368-1, due to its component certification according to IEC 61984.IEC 61984 certified > IEC 62368-1 compliantPrecise keyway for secure matingMetal insert in locking areaGlass reinforced V-0 materials make it extremely robust and dependableAccurate twist lock latching systemAirtight design - optimized for speaker applicationsProduct Range: speakONNo. of Contacts: 4 ContactGender: PlugConnector Mounting: Panel MountContact Plating: Silver Plated ContactsConnector Body Material: Nylon 6.6 (Polyamide 6.6) Body