Description
Product Overview
The PC4 M6 Pneumatic Fitting set is a versatile collection of twelve push connect components designed for reliable fluid control in a wide range of industrial and hobbyist applications. Each fitting combines a stainless steel body with a high grade plastic insert, delivering the strength of metal and the flexibility of polymer in a single compact unit.
All fittings share a metric M6 thread and a 4 mm outer diameter opening, making them directly compatible with standard PTFE tubing used in 3D printers, CNC machines, and other pneumatic devices. The compact 1 × 1 × 0.5 inch size allows easy routing through tight spaces while maintaining a secure seal.
The stainless steel exterior provides corrosion resistance and long term durability, while the plastic inner sleeve offers a smooth surface that prevents wear on delicate tubing. This dual material construction ensures that the fittings can withstand high pressure cycles without leaking.
Installation is tool free simply insert the PTFE tube into the fitting until it clicks into place. The push connect mechanism locks the tube securely, eliminating the need for additional clamps or adhesives and reducing assembly time.
The package includes twelve identical fittings, each marked with the PC4 M6 model number for easy identification. The uniform design simplifies inventory management for manufacturers and hobbyists alike.
The design of the PC4 M6 fitting follows industry standard dimensions, allowing it to be used as a direct replacement for many OEM parts. Engineers have performed dimensional analysis and tolerance testing to guarantee that the internal bore aligns perfectly with the outer wall of PTFE tubing, preventing micro gaps that could cause pressure loss. This attention to detail ensures that the fitting performs consistently across batches, giving users confidence in repeatable results.
Beyond mechanical performance, the fittings are built to resist a range of environmental factors. The stainless steel surface is passivated to reduce oxidation, while the plastic insert is formulated to withstand temperatures from –20 °C up to 120 °C without deformation. This temperature range covers most indoor manufacturing environments and many outdoor hobby projects, making the product adaptable to diverse operating conditions.
Each unit is individually packaged in a recyclable blister that displays the model number, thread size, and material composition. The clear labeling helps technicians quickly verify part specifications during assembly, reducing the chance of mismatched components. The compact packaging also minimizes storage space, which is valuable in crowded workshop shelves or inventory bins.
For customers who require specific color coding or additional length variations, the manufacturer offers limited customization options. While the standard offering is a silver finished stainless steel exterior, alternative finishes such as matte black or brushed nickel can be requested in bulk orders. These options allow OEMs to maintain visual consistency across their product lines.
The production process incorporates recycled metal content wherever possible, aligning with sustainability goals common in modern manufacturing. By selecting a fitting that combines durability with recyclable materials, end users contribute to a lower environmental footprint while still receiving a high performance component.
![[Product front view showing all components]](https://www.aknex.store/wp-content/uploads/2026/07/3ab85d01addf4b8183d50afc415d3d7e.jpg)
Usage
These fittings are ideal for upgrading the filament extrusion system of popular 3D printers such as the Creality Ender series, where precise tube alignment and leak free operation are critical for consistent print quality.
In CNC machining environments, the fittings connect coolant lines to spray nozzles, providing a quick release connection that can be serviced without disassembly of the entire machine.
Laboratory and automation setups benefit from the compact size and reliable sealing, allowing rapid reconfiguration of pneumatic circuits during experiments or production changes.
Because the fittings are compatible with any 4 mm PTFE hose, they can also be used in hobby projects such as DIY air powered tools, small scale robotics, or custom fluid delivery systems.
The medical equipment sector benefits from the clean, leak free connection provided by the PC4 M6 fitting. When used in low pressure gas delivery systems for respiratory therapy or laboratory gas sampling rigs, the push connect design eliminates the need for additional sealing compounds, which could contaminate sensitive environments.
In automotive prototyping, the fittings serve as quick change connectors for pneumatic actuators that test brake by wire or active suspension concepts. Their ability to be swapped without tools accelerates iteration cycles, allowing engineers to focus on performance data rather than hardware reassembly.
University engineering labs often require modular pneumatic components for student projects. The PC4 M6 fittings provide a safe, easy to use interface that students can assemble and disassemble repeatedly, reinforcing hands on learning while maintaining safety standards.
Why Choose Us
Our fittings are manufactured under strict quality control processes, with each piece inspected for thread accuracy and material integrity before packaging.
The combination of stainless steel and engineered plastic gives a balance of strength and flexibility that is difficult to achieve with single material components.
We stand behind the product with a comprehensive after sales guarantee; any manufacturing defect will be addressed promptly through our dedicated support team.
Fast shipping and responsive customer service ensure that you receive the fittings when you need them, minimizing downtime for your projects.
Our manufacturing facility holds ISO 9001 certification, demonstrating a commitment to quality management systems and continuous improvement. All production runs are documented, and traceability records are maintained for each batch, enabling quick resolution of any field issues.
Each fitting undergoes pressure testing at 1.5 times the rated maximum to verify leak integrity. The test includes cycling the connection thousands of times to simulate long term wear, ensuring that the product meets durability expectations before it reaches the customer.
We operate a multilingual support center that can assist customers in English, Spanish, German, and Mandarin. Whether you need technical advice, replacement parts, or documentation, our team is prepared to respond within 24 hours, reducing downtime for international users.
Key Features
- Tool free push connect installation saves time and eliminates the need for clamps.
- Stainless steel exterior resists corrosion and provides long term durability.
- High grade plastic inner sleeve protects PTFE tubing from wear.
- Metric M6 thread and 4 mm tube compatibility fit a wide range of 3D printers and pneumatic equipment.
- Dedicated after sales support offers replacement or assistance for any quality issues.
These five core benefits encapsulate why the PC4 M6 fitting is a preferred choice for professionals seeking reliability, ease of use, and long term support. By addressing installation speed, material durability, tube protection, universal compatibility, and dedicated service, the product delivers a comprehensive solution that aligns with both performance and cost efficiency goals.
FAQ
Can these fittings be used with tubing larger than 4 mm?
The fittings are engineered for a 4 mm outer diameter tube. Using a larger tube will not allow the push connect mechanism to lock properly, which can lead to leaks or disengagement under pressure. For best performance we recommend matching the tubing size to the specified 4 mm dimension. If you need to work with larger hoses, consider a different fitting series that is sized for the larger diameter.
Is the push connect mechanism reusable?
Yes, the push connect design is fully reusable. The tube can be removed by gently pulling it out and then reinserted, and the sealing surface will maintain its integrity for many cycles. As long as the tube itself is not damaged and the fitting is kept clean, the connection will continue to provide a leak free seal. This makes the fittings ideal for applications that require frequent maintenance or reconfiguration.
What pressure rating do these fittings support?
The stainless steel construction is rated for continuous operation up to 2 bar (approximately 30 psi). This pressure range covers the majority of desktop 3D printer extruder lines and low pressure pneumatic tools. For higher pressure applications, a different fitting with a stronger rating should be selected.
Do you offer bulk pricing for larger orders?
We provide volume discounts for bulk purchases. Customers interested in larger quantities can contact our sales department to discuss pricing tiers and receive a customized quote based on the order size and shipping destination.
How do I clean the fittings after use?
To clean the fittings, first disconnect the tubing and wipe the exterior with a lint free cloth dampened with isopropyl alcohol. For the interior, flush the stainless steel body with a mild detergent solution followed by a thorough rinse with distilled water. Allow the fitting to dry completely before reassembly to prevent moisture related corrosion. Regular cleaning helps maintain the sealing performance and extends the service life of the component.
Are these fittings compatible with other thread standards?
The PC4 M6 fittings are specified with a metric M6 thread. They are not directly compatible with British Standard Pipe (BSP) or other non metric thread types. If you need a different thread standard, we recommend selecting a fitting from our catalog that matches the required specification, or using an appropriate thread adapter to bridge the difference.




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