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A swivel hook extension spring is a type of tension spring equipped with rotating or adjustable hooks at both ends.
This design allows the hooks to rotate freely, preventing the spring from twisting during extension and enabling easier alignment during installation.
Even when the pulling direction changes, it maintains stable and smooth tension performance.
Swivel hook extension springs are widely used in mechanical devices, precision instruments, automotive components, and industrial applications that require flexible connections and adjustable tension.

Features:

1. Hooks can rotate or adjust angles for greater flexibility.

2. Prevents torsional stress on the spring body.

3. Improves service life and installation accuracy.

4. Suitable for multi-directional tension and space-limited applications.

A Wave Spring is a type of compression spring made from flat wire that is coiled into a series of waves or curves. It provides the same force and deflection as a conventional round-wire compression spring but in a smaller axial space, making it ideal for compact designs.

Wave springs are widely used in precision mechanical assemblies, where space efficiency, weight reduction, and stable load performance are critical. They offer excellent elasticity, low working height, and consistent load characteristics.

Key Features:

1. Compact design: reduces spring height by up to 50% compared with standard coil springs.

2. Lightweight and cost-efficient alternative for confined spaces.

3. Precise and stable load-deflection performance.

4. Manufactured from stainless steel, carbon steel, or Inconel for corrosion and heat resistance.

A Magazine Compression Spring is a type of compression spring specially designed for use inside firearm or toy gun magazines. It provides the upward force needed to push cartridges or pellets into the chamber. Unlike standard cylindrical compression springs, magazine springs often have a rectangular or oval shape to fit within the narrow magazine housing.

These springs are typically made from high-carbon steel wire, stainless steel (SUS304), or music wire (SWP) to ensure durability, high elasticity, and resistance to deformation after repeated compression.

A Spiral Spring, also known as a spiral torsion spring or clock spring, is made from a flat strip of metal wound in a spiral shape. It stores and releases rotational energy through the elastic deformation of the material. When the spring is wound, energy is stored, and when released, it provides a rotational restoring force.

Spiral springs are commonly used in applications requiring rotational torque or constant force within a limited space. They are valued for their compact design, stable torque output, and long fatigue life.

A compression spring is one of the most common types of springs, mainly designed to withstand compressive forces. When an external load is applied, the spring shortens as it is compressed; when the load is removed, it returns to its original shape and releases the stored energy.
Its primary functions are to absorb vibration, cushion impact, and provide restoring force.

Types of Compression Springs

1. Cylindrical Compression Spring – The most common type with uniform pitch and stable force characteristics.

2. Conical Compression Spring – Narrow at the top and wide at the bottom; can telescope into itself to save space.

3. Barrel Compression Spring – Larger in the middle and smaller at both ends to prevent buckling.

4. Hourglass Compression Spring – Smaller in the middle and larger at both ends; often used where stable positioning is required.

5. Magazine Compression Spring – Rectangular in shape, commonly used in toy guns or magazines to push pellets or bullets upward.

6. Custom Compression Spring – Springs with special shapes, irregular diameters, or non-uniform coil spacing, designed for unique applications.

Applications of Compression Springs

1. Automotive Components: Suspension systems, clutches, and brake assemblies.

2. Electronic Devices: Buttons, battery contact springs.

3. Machinery and Equipment: Shock absorption, return mechanisms.

4. Medical Devices: Surgical instruments, injection systems.

A Spring Factory is a professional manufacturer specializing in the design, production, and processing of various types of springs. Through precise coiling, heat treatment, grinding, and surface finishing techniques, the factory produces a wide range of springs — including compression springs, extension springs, torsion springs, spiral springs, battery springs, and wire forms — to meet the diverse needs of different industries.

Key capabilities include:

1.Customized Design – Developing springs based on customer drawings, functions, or specific application requirements.

2.Material Selection – Utilizing materials such as piano wire, SUS304, phosphor bronze, and INCONEL alloys.

3.Quality Control – Ensuring stability and durability through precise measurement and fatigue testing.

4.Surface Treatment – Offering zinc, nickel, and gold plating, painting, and passivation to enhance corrosion resistance and appearance.

Modern spring factories serve a wide range of industries, including automotive, electronics, medical devices, industrial machinery, home appliances, and aerospace — providing reliable elastic support and precision mechanical performance.

A Custom Battery Spring is designed for specific applications or customized requirements. Compared with standard battery springs, special types can be tailored based on product structure, current capacity, conductivity, or installation method.

The design may include unique shapes (such as dual-contact, flat-wire, or clip-type structures), special materials (like phosphor bronze, stainless steel, nickel alloys, or INCONEL), and surface treatments (such as gold, silver, or nickel plating) to enhance conductivity, corrosion resistance, and durability.

Special battery springs are widely used in medical devices, precision electronics, communication equipment, military instruments, and high-end industrial products.

Micro Springs are miniature precision springs, typically with wire diameters smaller than 0.2 mm, designed for compact mechanisms and high-precision devices. These springs provide stable elasticity or conductivity within limited spaces and are widely used in medical instruments, precision electronics, sensors, camera lenses, communication devices, and micro switches.

Micro springs can be made as compression, extension, or torsion types, customized to meet specific application needs. Their production requires high-precision coiling and inspection equipment to ensure dimensional accuracy, surface quality, and consistent spring performance.

Common materials include stainless steel, phosphor bronze, and specialty alloys such as Inconel or Elgiloy, with optional heat treatment or surface plating to enhance conductivity, corrosion resistance, and durability.

A battery spring is a metal elastic component specifically designed for battery contact and retention. It is commonly used in products that require battery replacement, such as remote controls, flashlights, toys, medical devices, power tools, and measuring instruments.

Wire forms or linear springs are elastic or structural components made by precisely bending and forming metal wire. They can be custom-designed in various shapes and functions according to customer requirements, and are used for holding, supporting, guiding, transmitting, or returning motion in a wide range of applications.

These products may not necessarily exhibit obvious compression or extension characteristics, but can provide elastic support or restoring motion depending on their design. Wire forms are widely used in automotive components, electronic devices, medical equipment, industrial machinery, hardware fittings, and household appliances.

Different materials can be selected based on design requirements, such as SUS304, SUS316, SWP, piano wire, phosphor bronze, and INCONEL X-750, with optional surface treatments including zinc plating, nickel plating, painting, or passivation to enhance appearance and corrosion resistance.

A magazine compression spring is a type of compression spring used inside a magazine assembly to provide stable and continuous pushing force, ensuring smooth feeding or movement of bullets or components.

These springs are typically made from high-carbon steel wire, piano wire, or stainless steel, offering excellent fatigue resistance and corrosion protection. They can be customized in wire diameter, outer diameter, free length, and number of coils to achieve the desired balance of force and durability.

A torsion spring is an elastic component that stores energy through the elastic twisting deformation of its material. When an external force is applied to both ends of the spring, causing it to twist, the spring generates a counteracting torque (torsional force) and returns to its original position once the force is released.

Torsion springs are commonly used in clamps, switches, camera shutters, automotive seat mechanisms, door hinges, robotic arms, and various rotating devices.

Their structure is typically made by coiling round wire into a helical shape, with both ends formed into different types of legs. Depending on the application, they can be designed as single or double torsion springs. During the design process, factors such as torque, rotation angle, space limitations, and material properties are carefully optimized to achieve the desired performance.

A compression spring is an elastic component that stores energy when compressed and returns to its original shape once the external force is removed. It is one of the most common types of springs and is widely used in various mechanical, electronic, and industrial applications, such as automotive suspension systems, valves, medical devices, household appliances, and electronic equipment.

Compression springs are typically made by coiling round or square wire into a helical shape. Depending on the application, they can be designed in different forms — such as cylindrical, conical, barrel-shaped, or with variable pitch — to meet specific mechanical characteristics and space requirements.

  An extension spring is a helical spring that elongates under tensile load and returns to its original shape when the load is removed. It is typically made of spring steel wire and designed with hooks or loops at both ends for fastening or connecting components.

An extension spring is a helical spring that elongates under tensile load and returns to its original shape when the load is removed. It is typically made of spring steel wire and designed with hooks or loops at both ends for fastening or connecting components.

Working Principle: When an external force pulls the two ends apart, the spring extends and stores energy; once the force is released, the spring contracts back to its original length.

Initial Tension: During manufacturing, a certain amount of preload is set so that the spring remains tightly coiled even without external force.

Connection Options: The end configurations of extension springs vary (such as German hooks, English hooks, machine loops, etc.) and can be customized according to specific application requirements.