Brass Connector Pins Factory OEM
Corrosion-resistant, anti-oxidation, suitable for harsh environments.
Accepts OEM/ODM customization from raw materials to final product.
High strength with excellent insertion and withdrawal durability for a long service life.
Supports multiple electroplating treatments to enhance reliability.
What is Brass Connector Pin
Brass connector pins are custom-machined metal components made of brass, widely used for signal and power transmission. They are usually manufactured by CNC turning.
Due to their excellent electrical conductivity, brass connector pins are widely used in many industries, especially in PCB connectors and terminals. Besides, we also offer a variety of surface treatments, including gold plating, nickel plating, and tin plating.
With Swiss CNC turning capability, tight tolerance control, and various plating options, we provide customized brass contact pins based on customer drawings and specifications. If you are looking for custom machined connector contacts, our engineers will provide manufacturability feedback within 2 hours.
Brass Connector Pins By Features
We offer a wide range of different CNC machined brass connector pins and custom solutions for different applications. Contact us for more details.
Made from high-quality brass, our pins are available with gold or nickel plating for excellent conductivity and corrosion resistance.
Our precision CNC machining ensures excellent concentricity and dimensional consistency.
Yecheng supports complex turned geometries and precision deburring treatment and clean deburring treatment.
We ensure precise mating tolerances for male/female connector pins with our precision turning machining.
Why Choose Us
We have been in micro CNC turning machining since 2013.
Machining diameter from Ø0.3 mm and above, pin length 2 to 12 mm.
We conduct full in-process inspection to ensure consistency.
Flexible MOQ for prototypes and mass production and sample fee refunded policy.
Engineering Brass Connector Pins
Yecheng offers professional CNC turning and Swiss machining for brass connector pins. With our engineering support for micro pins and complex geometries, you can optimize your product design more efficiently and get more inspiration.
Tight tolerance control is critical for connector performance. We manufacture parts according to ISO tolerance standards. If you have specific tolerance requirements, we can achieve tolerances up to ±0.01 mm, and the surface roughness can reach Ra0.8 – 1.6.
Besides, we can provide secondary processes such as thread rolling and knurling.
Send us drawings now, and you will get free feedback within 2 hours.
Strict Quality Control for Your Brass Connector Pins
We conduct a complete quality inspection for each brass connector pin. From high-quality raw materials to CNC processing, we strictly control the dimensions, tolerances, and concentricity.
Before plating, all parts undergo deburring and ultrasonic cleaning, and the thickness of gold/gold-nickel plating is inspected randomly.
The finished brass connector pins undergo insertion and extraction cycle tests, conductivity and signal stability tests.
A quality inspection report is issued to ensure that each batch of products has high precision, high conductivity, corrosion resistance, and reliable performance.
Send your drawings today and get a free DFM review with machining suggestions within 2 hours.
Our CNC Turning Centers
Over 10 years of development, we have over 10 CNC turning centers. If you have any urgent projects, we can support rapid prototypes and send samples within 3days for your approval.
Applications of Brass Connector Pins
Due to the excellent electrical conductivity, corrosion resistance and machinability of brass, precision turned pins are widely used in many applications.
With turning machining, we can finish products like pogo pins and socket contacts. Although these connectors are small in size, they serve as critical components for signal and current transmission, and their reliability directly affects the overall product performance.
Automotive connectors are different from ordinary consumer electronics. They need to work for a long time in much more demanding environments. Swiss micro CNC machining ensures high precision and repeatability for product sensor connector pins.
Industrial automation equipment, robots, testing equipment, and control systems usually require continuous operation for long periods of time. Center pins and connector bodies usually require tight tolerances within ±0.005 mm to ±0.01 mm; therefore, precision CNC machining is required.
Brass Connector Pins Specifications
- Machining Data Sheet
- Materials Data Sheet
- Inspection Equipment
| Item | Capability Range | Description |
| Process Type | CNC Swiss Turning / CNC Automatic Lathe | Suitable for high-precision micro connector pins and complex geometries |
| Minimum Machining Diameter | Ø0.3 mm | Capable of ultra-fine micro pin machining |
| Maximum Diameter | Ø20 mm | Standard range for connector pin production |
| Length Range | 2 mm – 120 mm (customizable) | Flexible production for different connector structures |
| Standard Tolerance | ±0.02 mm | Stable precision for general electrical applications |
| High Precision Tolerance | ±0.005 mm | Available for tight-fit and high-end connector systems |
| Concentricity | ≤ 0.01 mm | Ensures stable mating performance and signal reliability |
| Straightness | ≤ 0.02 mm / 100 mm | Controlled for long pin stability and insertion accuracy |
| Surface Roughness | Ra 0.8 – 1.6 μm | Suitable for electrical contact and plating adhesion |
| Deburring | 100% full process | Prevents short circuit and improves assembly safety |
| Material Grade | Features |
| H59 Brass | Cost-effective and good machinability |
| H62 Brass | Better conductivity and corrosion resistance |
| C3604 | High-speed precision turning |
| C36000 | Excellent dimensional stability |
Material Certification Mircometer Gauge CMM
Customer Testimonials
Very good gold plating for custom connector contacts and dimensions meet our requirements.
Michael Thompson | Supply Chain DirectorUSAQuality pins, professional communication. We will order again. Recommended supplier.
Giulia Bianchi | R&D EngineerItalyVery good to work with.
In a couple of exchanges, we agreed and the items were promptly sent.
Highly recommend
Olivia Martin | Quality EngineerEngineer
Yes, we can exactly customize based on your drawings, samples, measurement or even an idea. You can provide us with material requirements, drawings, surface finish and tolerance.
Our self-owned factory provides high quality CNC brass connector pins for your project.
There are many different types.
With different shapes, we have round pins, square pins and threaded brass connector pins.
We recommend using the Nickel-under-Gold electroplating process. The underlying nickel plating (1-3 μm) can prevent the migration of copper atoms, and the surface gold plating (Flash to 30u”) provides excellent anti-oxidation and wear resistance properties.
Related Product
How to choose high-quality brass connector pins for circuit boards?
After years of industry experience, you can pay attention to the factors below when choosing brass connector pins.
- Surface Finish
Gold Plating: Suitable for weak signal transmission and harsh environments.
Tin Plating: Suitable for ordinary power transmission.
- Material Grade
Check if high-quality brass (such as H59, H62, etc.) is used, as brass with fewer impurities has higher conductivity and is less prone to fracture.
- Size Tolerance
High-quality pins have extremely small diameter and length errors, ensuring a tight fit with the base or through holes and preventing poor contact.
- Rated Current and Voltage
Ensure that the pins can withstand the maximum current-carrying capacity of the project and avoid burning out due to overheating.
- Insertion and Ejection Times (Durability)
High-quality pins usually have a higher insertion and ejection lifespan (such as 50 times or more without loss of contact performance).
- Brand Qualifications
Prioritize products that have passed RoHS (environmental protection) and UL (safety) certifications.
