Custom OEM SUS304 Stainless Steel Extension Spring with Long Hook Design for Industrial Applications

METS specializes in manufacturing extension springs with long hooks and stainless steel OEM spring components for a wide range of industrial, automotive, electrical, mechanical, and consumer applications. Our custom extension springs are produced using advanced CNC spring coiling technology and precision forming processes to provide stable tension force, excellent elasticity, and reliable long-term performance.

An extension spring, also known as a tension spring, is designed to resist pulling forces and store mechanical energy when stretched. The long hook design provides convenient installation, secure connection, and flexible assembly options for different mechanical structures. METS can manufacture customized extension springs according to customer drawings, samples, specifications, or application requirements.

We offer a wide selection of spring materials, including stainless steel SUS304, SUS316, carbon steel, music wire, alloy steel, and other high-performance materials. These materials provide excellent corrosion resistance, fatigue resistance, and mechanical strength for demanding working environments.

• Custom OEM Extension Spring Manufacturing - Manufactured according to customer drawings, samples, CAD files, and technical specifications
• Long Hook Design - The extended hook structure allows easy installation, secure attachment, and flexible mechanical connection
• High Elastic Performance - Provides stable tension force, excellent rebound capability, and long service life under repeated loading conditions
• Stainless Steel Material Options - Available in SUS304, SUS316, and other corrosion-resistant materials for harsh environments
• Precision Spring Forming - Advanced CNC spring machines ensure accurate dimensions and consistent spring performance
• Excellent Fatigue Resistance - Designed for continuous operation with reliable cycle performance
• Wide Application Compatibility - Suitable for automotive, machinery, electrical equipment, appliances, and industrial systems
• Flexible Customization - Supports customized wire diameter, spring dimensions, hook shapes, loads, and surface finishes
• Stable Mass Production - Professional production processes ensure consistent quality for large-volume orders

Automotive Industry: Extension springs with long hooks are widely used in automotive systems, including seat mechanisms, door assemblies, brake systems, throttle components, engine parts, and various mechanical control systems. Their stable tension performance helps ensure reliable operation and long service life.

Industrial Machinery: Our tension springs are suitable for industrial equipment, automation machines, production lines, and mechanical assemblies requiring controlled pulling force and repeated movement.

Electrical and Electronic Equipment: Customized extension springs are used in switches, connectors, control devices, and electrical mechanisms where compact size and stable force performance are required.

Home Appliances: Long hook extension springs are commonly applied in washing machines, refrigerators, vacuum cleaners, and other household appliances for mechanical positioning and movement control.

Medical Equipment: Precision extension springs can be manufactured for medical devices and instruments requiring accurate force control and reliable mechanical performance.

Hardware and Consumer Products: Used in tools, furniture hardware, locks, toys, and various consumer products requiring flexible tension functions.

METS provides complete customization services for long hook extension springs to meet different application requirements.

Customized Spring Design
We support customer drawings and samples, 3D model analysis, spring parameter optimization, load calculation assistance, and performance improvement suggestions.

Customized Materials
Material selection includes SUS304 Stainless Steel for corrosion resistance and general industrial applications, SUS316 Stainless Steel for high corrosion resistance in harsh environments, Music Wire for high strength and excellent fatigue resistance, and Carbon Steel for cost-effective mechanical applications.

Customized Dimensions
Available customization options include wire diameter, coil diameter, spring length, number of coils, hook length, hook direction, hook shape, and pull force.

Customized Surface Treatment
Available finishing options include polishing, zinc plating, nickel plating, passivation, and anti-corrosion coating.

Customized Production
METS supports prototype samples, small batch orders, large-volume OEM production, and special spring development projects.

An extension spring with a long hook is a tension spring designed to absorb pulling force and provide resistance when stretched. The extended hook design improves installation flexibility and connection reliability.

We manufacture extension springs using stainless steel SUS304, SUS316, carbon steel, music wire, alloy steel, and other customized materials.

Yes. METS provides OEM spring manufacturing based on customer drawings, samples, CAD files, or technical specifications.

Our standard wire diameter range is approximately 0.1mm-60mm, with customized solutions available.

We can manufacture long hooks, machine hooks, cross hooks, extended hooks, and other customized hook designs.