FESTO Pressure Hoses & Connectors Connector 612236 - FESTO 8059257, The Festo NPHS-S6-M-G18 is a pneumatic connector featuring an external G1/8" thread. It is designed for secure and efficient connection in pneumatic systems. This component is typically used in industrial automation and control applications. FESTO 8059257 Connector External Thread G1/8" NPHS-S6-M-G18