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Precision Spring & Structural Manufacturing Platformr Since 2000

Precision Springs · Precision Welding · Precision Stamping · Structural Component Assembly Systems

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What We Offer

We combine precision spring manufacturing, metal stamping, and advanced welding to deliver reliable component solutions for AI computing, new energy, robotics, UAV systems, advanced medical devices, and high-end industrial equipment.

01

Springs Precision

Reliable springs from 0.03–25mm for AI, energy storage and UAVs with tight tolerance and long service life.

02

Stamping Components

Precision stamped brackets achieve micron accuracy to fit complex industrial assembly reliably.

03

Welding Assemblies

Automatic welding ensures solid structure, uniform welds and large-batch production for robots and UAVs.

04

Contacts & Terminals

High-precision contacts offer stable conduction and fixed spring force for AI and smart electronic devices.

05

Elastic Structural Components

Custom wave & wire-form springs resist fatigue well for servers, energy storage and industrial robots.

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Latest Launches

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Why Global OEM Customers Choose Us

Combining precision tooling development, integrated manufacturing processes, certified quality systems, and rapid engineering response, we deliver high-reliability precision components for AI computing, energy storage, robotics, UAV systems, EV applications, and advanced industrial equipment.

  • Precision Engineering &
    Tooling Development

    We have an experienced engineering team with over 20 years of professional experience and more than 50 patented technologies. Through the development of advanced progressive dies and forming tools, we continuously optimize material selection, structural design, and product lifespan.

  • Advanced Manufacturing
    at Scale

    Powered by over 200 automated production systems and supported by 150+ skilled personnel, our integrated manufacturing platform combines precision spring forming, metal stamping, welding, and assembly processes to deliver scalable production, flexible manufacturing, and fast-response supply capabilities for complex precision components.

  • Wide-Range Precision
    Manufacturing Capability

    Supporting wire diameters from 0.03 mm to 25 mm, our manufacturing systems maintain tight dimensional tolerances, stable elastic performance, and high structural consistency for complex precision components across demanding industrial applications.

  • Certified Quality Assurance &
    Advanced Inspection

    Certified under ISO9001, IATF16949, ISO13485, and ISO14001 standards, we implement full-process quality control from raw material inspection to final assembly validation, ensuring high consistency, tight tolerances, and reliable product performance.

  • Fast Engineering Response &
    Global OEM Support

    From technical evaluation and rapid prototyping to mass production and international delivery, our engineering-driven workflow enables fast response times, controlled lead times, and reliable global OEM supply support.

  • Engineered for
    High-Growth Industries

    Our high-reliability precision components are widely applied in AI computing infrastructure, energy storage systems, robotics, UAV platforms, EV applications, and advanced industrial automation equipment.

Since 2000

Professional Custom Precision Springs & Metal Components Manufacturer

Since 2000, Hershey Spring has specialized in custom precision manufacturing. We produce a full range of springs with wire diameters from 0.03mm to 25mm, including custom compression springs, torsion springs, wave springs, and extension springs. We also provide precision screws and metal stamped parts to offer complete integrated solutions. Our engineering team brings 25+ years of industry expertise to support your custom projects.

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Manufacturing

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Production Equipment

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Testing Equipments

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Wire Diameter Customized Range

Your Customization Journey: From Concept to Container

We make it simple for you to turn your design ideas into high-quality products. Our streamlined cooperation process ensures clear communication, efficient production, and reliable delivery, so you can focus on growing your business.

Inquiry & Spec

Define material, dimensions, and MOQ targets.

Design & Tooling

Mould design, CAD approval, and initial mold production.

Sample Trial

Physical sample production and customer performance testing.

Mass Production

High-volume manufacturing under strict ISO control.

Logistics

Secure packaging, and container loading.

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Custom Industrial Solutions for Hershey Manufacturing

Hershey provides precision spring and metal component solutions tailored to the specific requirements of different industries. With deep manufacturing experience and flexible customization, we support reliable performance across demanding applications worldwide.

Al Computing Infrastructure
Aerospace Spring
High end electronic
Automation spring
Medical Devices
New Energy Vehicles-(EV)
Robotics & Intelligent Equipment
Sports Equipment Spring
Premium Electrical Appliances
Al Liquid Cooling Systems
UAV Drone Systems
Baby -Strollers & Sports Equipment
Integrated Assembly Solutions

EPB Caliper Return Springs

Automotive Springs Challenge: A Tier 1 brake system giant required the springs to pass a 2 million-cycle high-frequency fatigue test, along with complete PPAP Level 3 documentation and a CPK validation package. Many contract manufacturers were eliminated due to a lack of system support.

Walser Solution: Under the guidance of our IATF 16949 system, we selected premium imported valve-grade oil-quenched alloy steel wire and implemented aerospace-grade double shot peening to significantly enhance surface residual compressive stress. Not only did the springs easily pass the fatigue testing, but our engineering team also delivered a complete set of standardized English PPAP reports within a short timeframe, helping the client achieve smooth mass production of their new vehicle model.

Sports Equipment

High-End Mountain Bike Rear Derailleur Torsion Springs Challenge: When shifting gears on muddy, bumpy terrain, the rear derailleur torsion springs are subjected not only to severe vibration and impact but also to corrosion from mud and water. Ordinary springs would quickly rust, become brittle, and fail.

Walser Solution: We selected SUS316L stainless steel, a material with exceptional weather resistance. Through precise CNC programming, we controlled the complex bending angles of the torsion spring’s long arms. This ensures riders receive precise, crisp shifting feedback even under severe vibrations, and the springs withstood over 1,000 hours of rigorous salt spray testing.

Robotics & Intelligent Equipment

Servo Motor Brake Compression Springs Challenge: The joint motors of industrial robots require extremely high braking force, but the installation space available for the brake springs is limited to just a few millimeters in outer diameter. Conventional springs simply cannot generate such immense thrust within such a confined space.

Walser Solution: We tackled the extreme “Spring Index.” By selecting specially hardened, high-tensile alloy steel wire, we wound it onto an ultra-fine mandrel to create miniature high-tension compression springs with a large wire diameter and small outer diameter. Combined with a high-pressure forming process, this design delivers astonishing braking and locking force within an extremely confined space.

Premium Electrical Appliances

High-Frequency Water Pump Springs for Fully Automatic Coffee Machines Challenge: The electromagnetic water pump inside the coffee machine requires extremely high-frequency (50 Hz) reciprocating motion. The original springs were not only prone to fatigue failure due to prolonged vibration but also rusted after exposure to high-temperature steam, contaminating the water.

Walser Solution: We selected SUS304 high-tensile stainless steel wire with excellent fatigue resistance and optimized the grinding process at both ends of the spring to ensure vertical force distribution. Not only did the springs easily pass high-frequency fatigue life tests of over 10 million cycles, but they also fully comply with food-grade (FDA) anti-corrosion and hygiene safety standards.

Medical Devices

Return Springs for Minimally Invasive Laparoscopic Surgical Staplers Challenge: Surgical staplers must fire crisply and cleanly. The springs from the previous supplier had inconsistent stiffness, causing the stapler to “jam” during surgery. Additionally, microscopic metal particles adhered to the surface, preventing the product from passing stringent medical cleanliness inspections.

Walser Solution: We selected medical-grade 316L steel wire and introduced a fully automated in-line force measurement and sorting machine to perform 100% automatic inspection of the firing springs, eliminating parts at the tolerance limits. At the end of the process, we use pure water and ultrasonic deep cleaning to deliver medical-grade components that meet the highest standards of biocompatibility and absolute zero dust.

High-End Electronics

High-Frequency Micro-Contacts for Smartwatch Heart Rate Sensors Challenge: In the heart rate module of a leading smart wearable brand’s watch, the space for the contact springs was less than 2 mm. Prolonged exposure to human sweat caused oxidation of the springs, leading to poor contact and intermittent heart rate data.

Walser Solution: We utilized highly corrosion-resistant SUS316L stainless steel for micro-precision stamping. To ensure conductivity, we applied a thick gold plating to the extremely small contact areas. Combined with excellent flatness control, this ensures the contacts provide stable contact resistance within the confined space, completely resolving the data interruption issue.

Aerospace Spring

UAV Landing Gear Shock Springs Challenge: Military high-altitude unmanned aerial vehicles (UAVs) require extreme lightweight design, but the impact forces during landing are immense. Traditional steel springs are too heavy and prone to rust and failure.

Walser Solution: In collaboration with our material suppliers, we selected high-strength titanium alloy wire for coiling. While maintaining the same load-bearing capacity, the weight was reduced by 40%. Furthermore, the titanium alloy’s inherent excellent corrosion resistance makes it perfectly suited for the high-salt-fog environment of maritime patrol operations.

AI Computing Infrastructure

GPU Thermal Bracket Assembly Challenge: A leading heat sink manufacturer discovered that the cumulative tolerances of the “spring + bracket” assemblies, which were manually assembled by downstream assembly plants, were severe. Additionally, standard compression springs exhibited “creep” under sustained high temperatures of 100°C on the chip, triggering critical thermal throttling.

Warsai Solution: We provide a “stamping + spring + welding” one-stop solution. We utilize a fully hardened SUS301 stamped base combined with a creep-resistant compression spring that has undergone hot pre-setting treatment, and finally secure the assembly through precision laser spot welding. We deliver a finished product with constant downward pressure and zero decay, saving the customer the hassle of assembly and completely eliminating tolerance interference.

New Energy Vehicles

Drive Motor Wave Springs Challenge: Electric vehicles impose extremely stringent requirements on motor size. Traditional helical springs used for preloading motor bearings occupy too much axial space, preventing further reduction in motor dimensions.

Walser Solution: We utilized the edge-winding process to customize multi-layer crest-to-crest wave springs. While maintaining equivalent thrust and operating stroke, we reduced the spring’s operating height by 50%, successfully helping the customer shorten the motor housing length and improve overall vehicle space utilization.

What Our Clients Say

John Smith Hershey’s precision springs consistently meet our tight tolerances. Their team is highly responsive, and we can always rely on them for on-time delivery. A very professional partner.
Lukas Müller Hershey liefert qualitativ hochwertige Komponenten. The engineering team understood our requirements perfectly and helped optimize our design. Sehr zuverlässig!
Maria Gonzalez Los componentes metálicos personalizados de Hershey cumplieron perfectamente con nuestras especificaciones. La comunicación fue fluida y el prototipo se entregó rápidamente. Muy recomendable.

RECENT ARTICLES

Industry research to help our customers make informed decisions when selecting Huarsai products.

With the latest market trends, industry insights, and customer feedback, we can help you find the Hershey solution that best meets your needs. Our resources are meant to help you gain a competitive edge in your market and ensure the best product selection for your customers.

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What is the Right Wire Diameter Range for Heavy-Duty Industrial Pins?

•
15 6 月, 2026

This article provides a technical guide for procurement managers to select heavy-duty pins. It highlights the critical balance between wire diameter, forming stability, and material fatigue life, positioning Hershey as an expert solution for high-load industrial applications.

What Fits Micro-Diameter Medical Locking Pins Best: 316L Stainless Steel or Titanium?

•
15 6 月, 2026

This article provides an engineering-focused comparison between 316L Stainless Steel and Titanium for micro-diameter medical locking pins. It highlights why 316L is the default choice for achieving ±0.01mm tolerance stability in batch production, while Titanium remains the superior option for permanent, biocompatible implantation. It serves as a decision-making framework for procurement managers and medical device designers to balance cost, performance, and clinical safety.

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