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Core fastening components engineered for reliability, conductivity, and long-term performance in electrical systems
High-precision stainless steel bolts designed for circuit breaker assembly, ensuring stable electrical connections and vibration resistance.
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Precision-machined bolts for solenoid valve cores, offering excellent corrosion resistance and tight dimensional tolerances.
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Specially treated metal bolts for new energy equipment, resistant to thermal cycling and suitable for EV charging infrastructure.
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Compact, high-strength bolts for zero firmware nozzle applications, ensuring leak-proof and electrically safe connections.
View Details →Metal bolts for low-voltage electrical equipment are precision-engineered fasteners specifically designed to meet the demanding requirements of electrical assemblies operating at voltages typically below 1,000V AC or 1,500V DC. Unlike standard industrial bolts, these components must simultaneously satisfy mechanical, thermal, and electrical performance criteria.
In low-voltage electrical systems — including circuit breakers, contactors, motor starters, distribution boards, and solenoid valves — metal bolts serve as the critical interface between conductive components, structural frames, and insulating materials. Their material composition, surface treatment, and dimensional precision directly impact the safety, reliability, and longevity of the entire electrical assembly.
A loosened or corroded bolt in a low-voltage panel can cause arcing, overheating, or complete system failure. Precision metal bolts with controlled torque specifications and anti-corrosion coatings are not optional — they are essential safety components.
Common materials include stainless steel (304/316), brass, carbon steel with zinc plating, and phosphor bronze. Each material is selected based on the application's conductivity requirements, environmental exposure, and mechanical load conditions. Surface treatments such as nickel plating, hot-dip galvanizing, and passivation further enhance performance in harsh industrial environments.
The global market for precision metal fasteners in electrical equipment is experiencing significant transformation driven by electrification, automation, and sustainability
The global push toward electric vehicles (EVs), solar power systems, and wind energy has dramatically increased demand for high-performance metal bolts in low-voltage electrical assemblies. EV charging stations, battery management systems, and inverter cabinets all require precision-fastened components capable of handling thermal cycling and vibration. The global EV charging infrastructure market is projected to exceed $100 billion by 2030, creating enormous demand for specialized electrical fasteners.
As smart grid technologies proliferate and industrial automation accelerates under Industry 4.0, the requirement for miniaturized, high-precision metal bolts in control panels, PLCs, and distribution systems has surged. These applications demand tighter tolerances (often ±0.01mm), specialized coatings, and materials that maintain conductivity under continuous operational stress. Manufacturers who can meet these specifications gain significant competitive advantage.
The adoption of IEC 60947 (low-voltage switchgear), UL 489, and RoHS/REACH compliance requirements has raised the quality bar for all components used in electrical equipment. Metal bolts must now undergo rigorous testing for salt spray resistance, vibration endurance, and electrical continuity. ISO9001-certified manufacturers who can provide full traceability documentation are increasingly preferred by OEM customers in Europe, North America, and Japan.
Post-pandemic supply chain disruptions have prompted major electrical equipment manufacturers to diversify their fastener sourcing. Chinese precision fastener manufacturers with advanced automation, strong quality systems, and export experience — particularly those in Zhejiang's Wenzhou-Yueqing industrial corridor — have emerged as preferred global suppliers, offering competitive pricing without compromising on quality or delivery reliability.
Modern low-voltage electrical equipment is trending toward smaller form factors with higher component density. This drives demand for micro-sized metal bolts (M2–M6 range) with exceptional thread accuracy and head geometry. The ability to produce these components at scale with automated CNC grinding and cold-forming technology is becoming a key differentiator for fastener manufacturers.
Environmental regulations and customer sustainability requirements are driving innovation in fastener materials. Lead-free brass alloys, recycled stainless steel, and bio-based surface treatments are gaining traction. Manufacturers investing in closed-loop production systems, waste reduction, and energy-efficient machining are better positioned to win contracts with environmentally conscious OEMs and comply with evolving international trade requirements.
Metal bolts for low-voltage electrical equipment serve critical roles across a wide spectrum of industries and technical environments
In molded-case circuit breakers (MCCBs) and air circuit breakers (ACBs), metal bolts secure arc chambers, contact arms, and terminal blocks. Precision-ground bolts with controlled surface roughness ensure consistent contact pressure, which is critical for maintaining rated interrupting capacity and minimizing contact resistance over thousands of operational cycles.
EV charging stations require metal bolts that can withstand thermal expansion, moisture ingress, and high-frequency vibration from compressors and cooling fans. Stainless steel bolts with PTFE-coated threads are commonly used in charging connector assemblies and power distribution units to ensure long-term reliability in outdoor environments.
Solenoid valve assemblies in pneumatic and hydraulic control systems rely on precisely torqued metal bolts to maintain coil alignment and prevent magnetic flux leakage. Brass and stainless steel bolts with non-magnetic properties are preferred to avoid interference with the electromagnetic actuation mechanism, ensuring consistent valve response times.
Grid-tied inverters and power conversion systems for renewable energy require metal fasteners that maintain electrical continuity across temperature ranges from -40°C to +85°C. Anodized aluminum and stainless steel bolts with spring-lock washers are used in DC bus connections and IGBT module mounting to prevent loosening due to thermal cycling.
In washing machines, air conditioners, and refrigerators, metal bolts secure motor terminals, control board mounts, and grounding points. The combination of compact size, precise threading, and aesthetic surface finish (nickel or chrome plating) makes these fasteners essential for both functional and cosmetic requirements in consumer-grade products.
Medical-grade electrical equipment and industrial filtration systems demand metal bolts with exceptional corrosion resistance and biocompatibility. 316L stainless steel bolts with electropolished surfaces are used in pump motor assemblies and control panel mounting, meeting stringent hygiene standards while maintaining reliable electrical grounding.
Years Experience
Zhejiang Jifeilong Instrument Technology Co., LTD. (formerly Yueqing Feilong Instrument Factory) was established in September 1999 and is located at the Oujiang Port in Wenzhou City. It has complete production, processing, grinding and other departments. We mainly engage in the integrated manufacturing and sales of various electrical switches, shafts, plastic products, and hardware components.
Our products are widely used in home appliances, solenoid valves, electronics, automobiles, filtration equipment and other fields. By implementing strict quality control in every production link, from raw material procurement to finished product delivery, the company has passed the ISO9001 certification.
The company constantly carries out system innovation, technological innovation and management innovation, and attaches great importance to introducing advanced manufacturing technologies and advanced production equipment in the industry. Through technological and equipment transformation, it has now achieved fully automated production capacity. And with strict management, high-quality products and excellent services, it has won the trust and support of over 100 enterprise customers in China.
The company adheres to the unchanging tenet of "seeking truth from facts and quality first", strictly implements the latest national and international quality standards, upholds the enterprise spirit of "quality first, reputation supreme, people-oriented, and quality as the root", gradually expands from the domestic market to the international market, and strives to become a high-quality global supplier of components.
Our values, mission, and vision drive every precision component we manufacture
Operate with integrity and achieve multi-party win-win
Be realistic and quality first
Reputation supreme, people-oriented, quality as the root
Strive to become a high-quality global supplier of components
Every metal bolt undergoes multi-stage quality inspection from raw material intake to final packaging. Our ISO9001-certified processes guarantee consistent dimensional accuracy, surface finish, and mechanical properties across every production batch.
Our state-of-the-art CNC grinding, cold-forming, and automated assembly lines deliver production capacities that meet the demands of large-scale OEM customers while maintaining the precision required for critical electrical applications.
With export experience spanning multiple continents and compliance with international standards including RoHS, REACH, and CE directives, we serve as a reliable one-stop supplier for electrical equipment manufacturers worldwide.
Our quality management and product certifications demonstrate our commitment to international standards
Trusted by leading enterprises across home appliances, automotive, new energy, and industrial automation sectors
Explore our full range of precision fasteners and hardware components for low-voltage electrical applications
High-strength bolts for switchgear panel assembly with anti-vibration locking features.
View Details →Precision stainless steel bolts for MCC bus bar connections and module mounting.
View Details →Corrosion-resistant bolts for battery module assembly in electric vehicle platforms.
View Details →Compact M4–M8 bolts for DIN rail mounted devices and terminal block assemblies.
View Details →Non-magnetic brass bolts ensuring precise electromagnetic performance in solenoid systems.
View Details →316L stainless steel bolts with electropolished finish for hygienic filtration control systems.
View Details →Zinc-nickel plated bolts meeting IATF 16949 automotive quality standards for ECU and relay boxes.
View Details →Nickel-plated steel bolts with aesthetic finish for consumer appliance motor and control board mounting.
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