Aeroquip FCN0620 #6 AQP Socketless Hose Black 20′ Air Brake Compressor Discharge. EST, MON to FRI. Brake > Electrical Connectors > Air Brake Compressor Discharge Hose Connector. Aeroquip FCN0620 #6 AQP Socketless Hose Black 20. Aeroquip – FCN0620 – #6 AQP Socketless Hose Black 20′ – Hose – AQP Socketless Hose – 6 AN – 20 ft – Rubber – Black – Each.