The SMC KQ2S04‑M5N is engineered for effortless and reliable airline connections worldwide. Designed as a compact M5 male-thread to 4 mm push-in adaptor, it blends precision engineering with an ultra-lightweight, hexagon-head body for easy tightening in confined spaces. Compatible with a range of tubing, nylon, urethane, FEP, and PFA, this fitting supports vacuum to 1 MPa pressure, making it ideal for pneumatic systems across industries. It guarantees leak-tight performance, stress-free installation, and fast tube removal, perfect for global OEMs, systems integrators, and maintenance teams seeking quality and efficiency.

What Sets the SMC Pneumatic Straight Threaded-to-Tube Adapter Apart

The KQ2S04‑M5N is widely chosen for its combination of speed, reliability, and compact design. Its one‑touch push-in mechanism drastically reduces assembly time and insertion force, while the release collar allows tubing removal without damage. The hex-socket head enables tightening in restricted spaces using a small wrench. This adaptor delivers lasting sealing and corrosion resistance, ensuring dependable pneumatic connections in diverse environments worldwide.

What Benefits Does It Offer to Users?

• Fast push‑in and release with minimal effort.
• Compact hex‑socket design fits tight installations.
• Durable nickel‑plated brass resists corrosion.
• Supports vacuum to 1 MPa (burst to ~3 MPa) pressure ranges.
• Compatible with various tube materials: nylon, polyurethane, FEP, PFA.
• Lightweight (~3 g) reduces load on tubing assemblies.

Broad Range Application

• Automated pneumatic systems in manufacturing
• Assembly lines and pressurized air delivery
• Vacuum-generation equipment and pick‑and‑place stations
• Robotics and machinery with limited access areas
• Fluid or air instrumentation in lab automation
• General maintenance or retrofit of airline connections