Screw-to-connect couplings are mechanical quick disconnect couplings that use threaded engagement to ensure reliable hose connections in hydraulic systems. Key product types include threaded hydraulic couplings and screw-lock couplings, centred on Parker Hannifin Parker 60 Series screw-to-connect couplings. Parker couplings are designed for secure sealing, controlled flow and safe connection at operating pressure. Common designs feature steel housings, screw-lock sleeves and double shut-off functionality. The range supports standard thread interfaces and pressure classes for hydraulic installations. Original Parker couplings are supplied with professional technical support and fast worldwide delivery.