5Pcs PCF4-03 3/8" PT to 4mm Push-In Pneumatic Quick Fittings
5Pcs PCF4-03 3/8" PT to 4mm Push-In Pneumatic Quick Fittings
Details
Keep your pneumatic systems running smoothly with these reliable PCF4-03 Push-In Air Pneumatic Quick Fittings. This pack of 5 connectors features a 3/8" PT female thread port paired with a 4mm tube push-in connection, making it easy to join air lines and vacuum lines without tools. Simply push the tube in to lock — no clamps or special tools needed.
Constructed from a durable combination of brass and plastic, these fittings are built to handle the demands of industrial and workshop pneumatic setups. The compact size (25 × 19mm each) makes them ideal for tight spaces where larger connectors won't fit.
Made in Mainland China.
Key Specifications
- Model: PCF4-03
- Female Thread Size: 3/8" PT (ID: 16mm)
- Tube OD: 4mm (0.157")
- Overall Size (each): 25 × 19mm (L × Max. D)
- Fluid Type: Air / Vacuum
- Operating Pressure: 0–10.2 kgf/cm² (0–1.0 MPa)
- Negative Pressure: -750 mmHg (10 Torr)
- Operating Temperature: 0–60°C
- Material: Brass & Plastic
- Package Contents: 5 × Quick Fittings
Why Choose These Quick Fittings?
- Tool-free installation — push-in design connects tubing in seconds
- Secure, leak-resistant seal — reliable performance up to 1.0 MPa operating pressure
- Versatile compatibility — suitable for air compressors, pneumatic cylinders, automation equipment, and vacuum systems
- Durable construction — brass and plastic combination withstands everyday workshop use
- Value pack — 5 pieces for multiple connections or spares on hand
Full PCF Series Compatibility Chart
| Model | Tube OD (mm) | Female Thread Size | Thread ID (approx.) |
|---|---|---|---|
| PCF4-01 | 4 | PT 1/8 | 9.7mm |
| PCF4-02 | 4 | PT 1/4 | 12mm |
| PCF4-03 ★ | 4 | PT 3/8 | 16mm |
| PCF6-01 | 6 | PT 1/8 | 9.7mm |
| PCF6-02 | 6 | PT 1/4 | 12mm |
| PCF6-03 | 6 | PT 3/8 | 16mm |
| PCF6-04 | 6 | PT 1/2 | 20mm |
| PCF8-01 | 8 | PT 1/8 | 9.7mm |
| PCF8-02 | 8 | PT 1/4 | 12mm |
| PCF8-03 | 8 | PT 3/8 | 16mm |
| PCF8-04 | 8 | PT 1/2 | 20mm |
| PCF10-01 | 10 | PT 1/8 | 9.7mm |
| PCF10-02 | 10 | PT 1/4 | 12mm |
| PCF10-03 | 10 | PT 3/8 | 16mm |
| PCF10-04 | 10 | PT 1/2 | 20mm |
| PCF12-01 | 12 | PT 1/8 | 9.7mm |
| PCF12-02 | 12 | PT 1/4 | 12mm |
| PCF12-03 | 12 | PT 3/8 | 16mm |
| PCF12-04 | 12 | PT 1/2 | 20mm |
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Frequently Asked Questions
Q: What tube outer diameter (OD) is compatible with the PCF4-03 pneumatic quick fitting?
A: The PCF4-03 is designed for tubes with a 4mm outer diameter (OD). Simply push the tube firmly into the fitting until it locks in place for a secure, airtight connection.
Q: What is the maximum operating pressure for these pneumatic quick fittings?
A: These fittings support an operating pressure range of 0 to 10.2 kgf/cm² (0 to 1.0 MPa), making them suitable for most standard air compressor and pneumatic tool applications.
Q: Can these fittings be used with vacuum systems?
A: Yes. The PCF4-03 supports both compressed air and vacuum applications, with a negative pressure rating of -750 mmHg (10 Torr), making them versatile for a wide range of pneumatic setups.
Q: What thread standard does the PCF4-03 use and how do I identify it?
A: The PCF4-03 uses a 3/8" PT (parallel taper) female thread with an inner diameter of approximately 16mm. PT is a commonly used pipe thread standard in pneumatic and plumbing applications across Asia and Europe.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.
Materials + Care
We prioritize quality in selecting the materials for our items, choosing premium fabrics and finishings that ensure durability, comfort, and timeless appeal.
Shipping + Returns
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