Pneumatic Coupler Air Connectors PC4-M5 4MM Straight Fitting for PTFE Bowden Tube – M5 Thread for 3D Printer

The Pneumatic Coupler Air Connectors PC4-M5 4MM Straight Fitting is a high-precision push-to-connect pneumatic fitting designed for Bowden-style 3D printer setups. It connects 4mm outer diameter PTFE tubing securely to extruders and hotends using an M5 x 0.8mm threaded connection.

Built with corrosion-resistant nickel-plated brass, this fitting ensures long-lasting, reliable operation. Its rotating design allows you to reposition the tubing freely, even after installation—making it perfect for compact or intricate 3D printing builds. Compatible with both polyurethane and nylon tubing, it is a must-have component for stable and consistent filament feeding in Bowden extruder systems.

🔧 Key Features

• Durable Pneumatic Coupler PC4-M5 straight fitting for 4mm OD tubing
• M5 x 0.8mm threaded metal connector for stable attachment
• Compatible with PTFE, polyurethane, and nylon tubing
• Rotatable design allows flexible installation angle
• Made of nickel-plated brass for enhanced corrosion resistance
• Used in Bowden-style 3D printers for hotend and extruder connections

📐 Technical Specifications

📌 Applications

• Bowden-style 3D printer hotend connections
• Extruder tubing interface for filament feed
• Custom DIY and RepRap 3D printer builds
• Pneumatic tubing control in compact assemblies

💡 Why Choose This Fitting?

The Pneumatic Coupler PC4-M5 4MM Straight Fitting is the go-to solution for clean, flexible filament routing in Bowden-style setups. Its easy push-in mechanism, rotatable head, and durable brass body make it a practical and long-lasting connector for any 3D printing enthusiast or professional.

📦 Package Includes

• 1 × Pneumatic Coupler Air Connector PC4-M5 4MM Straight Fitting