50030 00 N05 AIGNEP — Straight Push-In Fitting with Female Thread, G1/4-8 mm

Key Specifications

Design Features

The nickel-plated brass body provides corrosion resistance and extends service life in the humid conditions typical of warehouse and workshop pneumatic lines. The AISI 301 collet allows the tube to be removed and reinserted repeatedly without losing grip force, which is useful during commissioning and later maintenance. The external hex simplifies wrench-tightening of the threaded connection without risking rotation of the fitting body.

Installation Recommendations

Before installation, cut the tube at a right angle, free of burrs or cross-section deformation, and insert it fully into the collet. Apply PTFE tape or thread sealant to the G1/4 connection, but avoid over-tightening — exceeding the torque limit can deform the nickel-plated brass and compromise sealing. When used with water or aggressive process fluids, verify the chemical compatibility of the NBR seal with the medium beforehand.

Analogues and Comparable Brands

On the pneumatic components market, this fitting is functionally matched by similar push-in fittings with female thread from other manufacturers: SMC (KQ2 series), Festo (QS/CRQS series), Camozzi (6000 series), Parker Legris (LF3000 series), and Metal Work (Push-in series). When selecting a replacement, compare not only the connection dimensions (G1/4–8 mm) but also body material, seal class, and rated pressure, since budget-tier alternatives may have limitations on temperature range and long-term sealing performance.

Common Installation Mistakes

• Threading the connection without sealant — causes air leakage even with a correctly matched thread.
• Inserting a tube with an uneven or deformed end — reduces the reliability of the collet grip.
• Exceeding the tightening torque on the thread — risk of deforming the nickel-plated brass.
• Using the fitting below −20 °C without checking seal properties — possible loss of NBR elasticity.

Practical Use Cases

1. Replacing worn plastic fittings with metal equivalents from this series on a line subject to cyclic loading — reduced leak incidents at scheduled maintenance.
2. Connecting an air preparation unit to a G1/4 main line with a transition to 8 mm tubing — simplified installation without welded or threaded couplings.
3. Use in vacuum gripper assemblies with tubed distribution — stable sealing under cyclic loads.

Expert Opinion

★ “The 50030 00 N05 fitting is a standard, predictable solution for transitioning from a G1/4 thread to 8 mm tubing. For warehouses and production facilities in Moldova, we recommend it wherever installation repeatability matters: the nickel-plated brass and AISI 301 collet hold up well under our operating conditions and allow quick component replacement during maintenance without shutting down the whole system.” — Vitali Boluchevski, Acvatron SRL.

Frequently Asked Questions

How do I correctly identify a fitting’s thread? A thread cannot be identified by simply converting millimeters to inches — measure the thread pitch and outer diameter, then compare against a thread chart or use a dedicated calculator.

What’s the difference between G1/4 thread and tapered R/NPT thread? G1/4 is a cylindrical thread that does not self-seal and requires additional sealant (PTFE tape, paste). Tapered R/NPT threads seal through a wedging effect as they’re tightened.

Can this fitting be used with drinking water? The NBR seal is suitable for process water, but contact with drinking water requires separate verification that the materials meet sanitary standards.

What happens if the 20 bar working pressure is exceeded? The connection may lose its seal and the collet mechanism may be damaged; for non-standard pressures, use a higher-rated fitting class.