FESTO Pressure Hoses & Connectors Screw fastener 612393 - FESTO 578276, Festo manufactures the screw fastener NPQH-L-M5-Q4-P10, which operates at pressures from -0.95 up to 20 bar and features an external thread M5. This durable component is ideal for secure connections in pneumatic systems. It is commonly used in industrial automation applications where reliable joint fastening is critical. FESTO 578276 Screw Fastener M5 thread 20 bar sealing ring 10 pcs