Stainless Steel Contact Finger Spring

Stainless Steel Contact Finger Spring is an elastic metal spring made of stainless steel, usually in the shape of a finger or spring, used to achieve functions such as electrical contact, EMI electromagnetic shielding or structural buffering. This type of finger spring is widely used in multiple precision electronic, communication and industrial equipment due to its good elasticity and conductivity. It can exist as a single spring or a continuous arrangement, installed between the shell, housing, edge of the circuit board or interface.

Uses:

Used for electrical connection or grounding to ensure conductivity and stability between electronic components.

Applied to electromagnetic interference (EMI) shielding to prevent external interference from entering sensitive circuits.

Serves as a contact bridge between the metal housing and the circuit to improve the overall shielding performance of the product.

Plays a structural buffer and pressure distribution role in the equipment to prevent loose or disconnected connections.

Used to form a stable contact between the equipment housing or slot to adapt to structural changes caused by thermal expansion and contraction.

Common application areas include server cabinets, communication base station equipment, medical equipment, electric vehicle interfaces, aerospace connectors, etc.

Material:

Stainless Steel Contact Finger Spring is mainly made of stainless steel, and commonly used materials include stainless steel 301, 304, 316, etc. Some high-performance versions may also use materials such as nickel-copper alloy or beryllium copper, and improve their conductivity, corrosion resistance and wear resistance through surface treatments such as gold plating and tin plating.

Stainless steel materials have excellent mechanical properties, oxidation resistance and elastic recovery ability, and can still maintain good electrical contact and elasticity in high temperature, high humidity and corrosive environments, so they have become the preferred raw material.

Features:

Strong elasticity: It has stable resilience and can provide continuous and uniform contact pressure.

Good conductivity: The material itself has good conductivity, and some products can be gold-plated to enhance performance.

Flexible installation: It can be installed by welding, clipping, attaching, etc. to meet different structural requirements.

Strong corrosion resistance: Suitable for harsh industrial environments such as high humidity and high salt spray.

Small size: It does not affect the overall structure of the system and has high adaptability.

Reusable: It has good fatigue resistance and can withstand multiple plugging and unplugging or repeated extrusion.

Various shapes: various lengths, widths, curves and bending angles can be customized.

- Fast response: With high-frequency contact performance, suitable for high-speed electronic systems.

Advantages:

Improve the EMI shielding efficiency of equipment and effectively isolate external signal interference

Extend the service life of electronic connection systems and provide a stable grounding path

Simplify the assembly process, no complex cable grounding structure is required

Helps lightweight design and replaces bulky grounding devices

Maintains stable performance under long-term high loads and is not prone to fatigue fracture

Can be customized in batches to meet the design needs of various industrial structures

Save space, especially suitable for micro or high-density circuit systems

Reduce maintenance costs and reduce equipment failures caused by poor contact

FAQ:

What equipment is suitable for using Stainless Steel Contact Finger Spring?

Stainless Steel Contact Finger Spring is widely used in equipment that requires electromagnetic shielding, electrical contact or grounding, such as communication equipment, servers, industrial control boxes, medical electronics, aviation equipment and automotive electronic modules

How to choose the appropriate Finger Spring specifications?

When choosing, you need to consider contact pressure, installation space, required shielding level, ambient humidity and temperature, and whether surface treatment (such as gold plating) is required. It can be customized according to drawings or samples.

Can Stainless Steel Finger Spring be used in high-frequency environments?

Yes, its structural stability and good conductivity make it suitable for high-speed, high-frequency communication systems, and it still has stable shielding performance in the GHz frequency band

Is this finger spring recyclable or reused?

Yes, most stainless steel contact finger springs are designed as reusable components with good mechanical resilience and wear resistance, suitable for repeated plugging and unplugging and multiple installations

Is additional welding required during use?

Not necessarily, some designs use snap-on or surface-mount installation, which can be fixed without welding. According to actual structural requirements, welding solutions can also be selected to improve firmness and conductivity