Brass Fastener

HAWEN Brass Fasteners are fasteners primarily made of a copper-zinc alloy, commonly used in mechanical, electrical, and circuit board applications. They are favored for their excellent corrosion resistance, conductivity, and metallic luster. Featuring high strength, hardness, strong chemical corrosion resistance, and good wear resistance, our products are widely used in automation equipment, precision machinery, and semiconductor circuits. We welcome customers to provide drawings for custom orders or visit our factory.

Product Specification

Product Application Fields

HAWEN (Trilon) has been deeply engaged in the machinery industry for more than 20 years. Since 2005, we have conducted in-depth R&D and production of brass screw components, various nuts, screws and other brass parts. All such products are precision-machined from brass, and our products are widely used in multiple industries:

1.Precision Equipment: Meets the needs of precision assembly and balances strength with cost efficiency.

2.Construction & Engineering: Applied to building nuts, bridge fittings and other components; its excellent atmospheric corrosion resistance adapts to outdoor environments and ensures safety for long-term use.

3.Hardware & Household Sectors: Its corrosion resistance maintains stable performance in humid environments (e.g., bathrooms, kitchens), avoiding seizure caused by rust and improving product durability and maintenance convenience.

4.General Industrial Transmission: Features a moderate level of transmission precision, suitable for scenarios with non-extremely stringent precision requirements.

Our tin-plated brass screws boast outstanding electrical performance: the tin plating preserves the excellent electrical conductivity of the brass substrate, while preventing increased contact resistance caused by oxide layers to ensure the stability of electrical connections. It also significantly improves weldability — tin has a low melting point (about 231.9℃) and its surface oxide (SnO₂) is easily broken down, enabling the formation of reliable, low-resistance weld joints during welding. This makes it critical for brass components requiring reliable welding such as electronic parts and electrical connectors. Our products are therefore widely used in the circuit board and semiconductor industries.

Strong Adaptability: The service life of our brass screws can be extended through surface treatments such as brushing and annealing, which further enhance the glossiness and durability of the products.

Product Application Equipment and Main Customers

The above products are mainly applied to equipment in industrial circuit boards, washing machine circuit controllers and other fields, with core customers including Nidec, Midea, Haier and other renowned enterprises.

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Technical Parameters: Brass Screws

Competitive advantage

Engineering as the Starting Point of Manufacturing

HAWEN treats engineering capability as the starting point of manufacturing rather than a supporting function. At the early project stage, HAWEN’s technical team works with customers to evaluate industrial system architecture, operating conditions, and functional objectives, ensuring product structure, material selection, and processes meet performance requirements while remaining suitable for stable mass production.

Automated Production Mechanism

HAWEN has established a manufacturing mechanism centered on fully automated production lines. The facility operates 10 fully automated production lines, supported by an automated surface cleaning line and an automated black oxide treatment line. All critical machining processes are completed using high-precision automated equipment, with key tolerances such as inner bore tolerance consistently maintained at ≤0.005 mm, forming a solid foundation for high-volume, high-consistency production.

Data-Driven Quality Assurance System

Quality control is embedded throughout the production process. Material consistency is managed from the raw material sourcing stage. During production, online inspection systems collect and monitor key process data in real time, enabling immediate identification and correction of deviations and minimizing human-related variability. The process yield rate remains stable at 99.995%, with 100% outgoing inspection for all products.

Environmentally Compliant Manufacturing Management

Environmental and regulatory requirements are integrated into standardized manufacturing management. Products are manufactured using 1215 low-carbon free-cutting steel to reduce harmful substances. Surface treatment is carried out through a fully automated black oxide process, preventing manual contamination while improving corrosion resistance and reducing waste. All products comply with international environmental regulations such as ROHS and REACH.

Application-Oriented Customization Capability

Based on the operating characteristics of customer industrial systems, HAWEN provides customized and special-shaped designs to ensure application compatibility and operational reliability. Early engineering involvement reduces later structural adjustments and repeated testing, improving overall development efficiency.

Capacity Redundancy for Delivery Assurance

HAWEN’s total monthly capacity reaches approximately 5 million units. With current monthly shipments of 3–4 million units, 40%–60% capacity redundancy remains available. This configuration enables fast response to demand growth and ensures stable long-term supply.

Regional Supply Chain Support

Located in Zhejiang Province, one of China’s key manufacturing regions, HAWEN benefits from long-term cooperation with mature local suppliers. Short procurement lead times for raw materials and components enhance responsiveness and support flexible design and demand adjustments.

Measurable Customer Outcomes

Through early engineering involvement, automated manufacturing, and a stable quality system, HAWEN consistently helps customers achieve cost efficiency, low-noise operation, high qualification rates, and environmental compliance. Choosing HAWEN means reducing total lifecycle costs across development, testing, manufacturing, and after-sales service.

Material Selection

Brass is a copper-zinc alloy with a copper content of 60%-90% and a zinc content of 10%-40%, and its density is 8.8~8.9 g/cm³. It features high strength and hardness combined with good wear resistance, and its mechanical properties can be adjusted by modifying the zinc content. The material has a tensile strength ≥390 MPa and an elongation ≥10%, with excellent machinability that sets an industry benchmark, making it ideal for high-speed precision machining and automated production.

Excellent Processing Performance

It has good plasticity in both hot and cold states, easy to perform cold and hot plastic working, and features good machinability, brazing and welding performance.

Process Control

Tolerance Control: Achieving a high precision of ≤0.05mm places extremely high requirements on processing equipment and process stability. Such a precise tolerance range demands top-tier accuracy of machining equipment (e.g., CNC machine tools), high-quality cutting tools, and stable process conditions (e.g., temperature control, vibration suppression); any minor deviation may lead to product quality defects.We adopt advanced manufacturing processes to ensure this precision: realized through high-precision measuring instruments (e.g., Coordinate Measuring Machine (CMM), Roundness Tester, Profile Measuring Instrument), strict process control (e.g., Statistical Process Control (SPC)) and a stabilized machining environment, which guarantees batch production consistency.Application Value: In precision transmission systems, inner bore tolerance directly affects the fitting accuracy between components and shafts, which is critical to transmission efficiency, noise control and product service life — it is a core technical indicator for high-end manufacturing.

We exercise strict quality control throughout the production process to ensure the stability and durability of products during use.

Material Performance Matching: Strictly control material hardness and heat treatment processes to effectively enhance wear resistance and fatigue strength.

Surface Treatment - Self-Developed Fully Automatic Electroplating Production Line

As brass screws are made of brass and operate in harsh service environments, they are inevitably prone to rust and corrosion without proper treatment. Our company has a professional and experienced core R&D team; through years of practical experience and repeated trials, we have developed a dedicated surface treatment formula for this product, and adopted fully automatic electroplating equipment integrated with a fully automatic drying system.

There is no manual contact with products throughout the entire process, which not only enhances the corrosion resistance of products to meet industry standards, but also reduces the risk of product collision caused by human contact and ensures the operational stability of products.

Other surface treatment methods such as blackening, zinc plating and nickel plating are also available and can be fully customized according to customer requirements.

R&D & Customization Capabilities

Our professional R&D and technical team has 20 years of in-depth industry experience. We can fully meet customer requirements, solve their technical pain points according to their specific application scenarios and demands, and customize special-shaped pulleys. We warmly welcome customization per provided drawings, including customized products with designated raw materials and surface treatment processes. We also extend a sincere invitation to overseas visitors to visit our manufacturing factory.

Environmental Requirements

All products meet strict environmental protection requirements in terms of raw material selection and surface treatment processes, and are supported by official ROHS and REACH certification reports.

Synergy from the New Organizational Structure

The synergy brought by the new organizational structure enables HAWEN to fully meet customer expectations on the basis of in-depth and effective cooperation.

Domestic Customers & Market Share

We have established long-term strategic partnerships with domestic customers such as Sanjiang Electric, LG Tianjin and Nidec, with a stable cooperative relationship spanning more than a decade. Up to now, our company has achieved a 10% market share of brass screws in the Chinese market.