5Pcs M3 M5 M6 Male Thread Pneumatic Quick Coupler 4mm 6mm
5Pcs M3 M5 M6 Male Thread Pneumatic Quick Coupler 4mm 6mm
Details
5-Pack Mini Straight Pneumatic Quick Coupler Connectors – M3, M5 & M6 Male Thread
Keep your pneumatic systems running smoothly with this versatile set of 5 mini straight push-in quick coupler connectors. Engineered for fast, tool-free tube connections, these compact metal fittings are ideal for air lines, automation rigs, workshop compressors, and DIY pneumatic projects. Each connector features a male thread (M3, M5, or M6) and accepts 4 mm or 6 mm OD air tubing for a secure, leak-resistant fit.
Made in Mainland China.
Key Features
- Push-In Quick Connect Design – Insert the tube and it locks instantly; press the release collar to disconnect without tools.
- Multiple Thread Sizes – M3, M5, and M6 male threads to match a wide range of pneumatic ports and fittings.
- Compatible Tube Sizes – Fits 4 mm and 6 mm OD air tubing (0.16″ and 0.24″).
- Durable Metal Construction – Silver-tone metal body withstands regular workshop and industrial use.
- Compact & Lightweight – Mini profile fits in tight spaces where standard connectors won't reach.
- Value Pack – 5 couplers per pack so you can outfit multiple connections in one order.
Specifications
| Product Name | Mini Straight Pneumatic Quick Coupler |
| Thread Type | Male – M3, M5, M6 |
| Compatible Tube OD | 4 mm (0.16″) / 6 mm (0.24″) |
| Material | Metal |
| Color | Silver Tone |
| Quantity | 5 Pieces |
| Origin | Mainland China |
Perfect For
- Air compressor lines and workshop pneumatic setups
- Pneumatic automation and robotics projects
- DIY and hobbyist compressed-air systems
- Replacement fittings for existing pneumatic assemblies
Related Products You May Need
- 10pcs 2-Pin Spring Wire Connectors – Quick Splice Lock Terminals
- 10PCS Stainless Steel Self-Tapping Screws M2.2–M4.8 Phillips
- 12pcs 16mm Momentary Push Button Switch 1NO Metal 2-Pin Self-Reset
Learn more: OSHA on personal protective equipment
Frequently Asked Questions
Q: What tube sizes are compatible with these pneumatic quick couplers?
A: These mini straight push-in connectors are designed for air tubing with an outer diameter (OD) of 4 mm (0.16″) or 6 mm (0.24″). Always check the OD of your tubing before ordering to ensure a proper fit.
Q: What thread sizes do the 5 couplers in this pack include?
A: The pack includes male-threaded connectors in M3, M5, and M6 sizes, giving you the flexibility to connect to a variety of pneumatic ports and equipment.
Q: Are these pneumatic quick couplers suitable for use with air compressors?
A: Yes. The metal construction and push-in quick-connect design make these couplers well-suited for standard workshop air compressor lines and pneumatic systems. Always verify the operating pressure rating matches your application requirements.
Q: How do I disconnect the air tube from the coupler?
A: Simply press down on the release collar around the tube entry point while gently pulling the tube. The push-in mechanism releases cleanly without the need for any tools.
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
We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.