Dual Hook Tension Spring SUS304 Stainless Steel Extension Spring with Precision CNC Manufacturing and Customizable Spring Force

The Dual Hook Tension Spring | SUS304 Stainless Steel Extension Spring is a precision-engineered mechanical spring designed to provide reliable pulling force, tension control, and elastic return performance in various industrial applications. Featuring a double hook design on both ends, this extension spring allows easy installation and secure connection between components while delivering stable tensile force during operation.

Manufactured from high-quality SUS304 stainless steel, this dual hook tension spring offers excellent corrosion resistance, fatigue resistance, and long-term durability, making it suitable for demanding environments including automotive systems, machinery, electrical equipment, and industrial assemblies.

The spring is produced through advanced CNC spring coiling technology and precision forming processes to ensure accurate dimensions, consistent spring force, and excellent repeatability. The double hook structure provides strong connection reliability and helps maintain stable tension performance under repeated stretching cycles.

With professional spring manufacturing capabilities, we provide OEM and ODM custom extension springs according to customer drawings, samples, load requirements, and application specifications. Custom options include wire diameter, spring dimensions, hook shape, material selection, surface treatment, and production quantities.

The Dual Hook Tension Spring is widely used for mechanical tensioning, return mechanisms, fastening systems, door mechanisms, automotive components, and industrial equipment requiring compact and reliable tension solutions.

• Premium SUS304 Stainless Steel Material: Excellent corrosion resistance, oxidation resistance, and long service life in harsh environments.
• Dual Hook Design for Secure Connection: Easy mounting and reliable attachment between components with stable force transmission.
• Stable Tension Performance: Consistent pulling force and elastic recovery through repeated extension cycles.
• High Fatigue Resistance: Excellent durability under continuous loading and repeated movement.
• Precision CNC Spring Manufacturing: Accurate dimensions, uniform coil spacing, and consistent mechanical performance.
• Custom Spring Force Available: Spring rate, load capacity, extension length, and hook configuration customization.
• Excellent Environmental Resistance: Protection against moisture, corrosion, temperature changes, and outdoor conditions.
• Wide Industrial Compatibility: Suitable for automotive, machinery, electrical equipment, furniture, appliances, and industrial automation.

Used in automotive systems including seat mechanisms, throttle systems, brake components, door assemblies, and vehicle interior mechanisms requiring reliable tension force.

Applied in mechanical equipment, automation systems, production lines, and industrial machines for tension control, positioning, and return functions.

Suitable for electrical devices, switches, control systems, and equipment assemblies where compact tension components are required.

Used in washing machines, refrigerators, ovens, and other appliances for door mechanisms, tension adjustment, and moving parts.

Applied in equipment exposed to outdoor environments where corrosion resistance and durability are important.

Suitable for furniture mechanisms, hinges, locking devices, and adjustable structures requiring spring tension support.

We provide professional OEM and ODM dual hook tension spring manufacturing services to meet different application requirements.

• SUS304 Stainless Steel
• SUS316 Stainless Steel
• Carbon Steel
• Music Wire
• Alloy Spring Steel
• Phosphor Bronze

• Wire diameter
• Coil diameter
• Spring length
• Number of coils
• Hook size
• Hook angle
• Extension length

• Initial tension
• Maximum load
• Working load
• Spring rate
• Extension distance

• Stainless steel polishing
• Passivation
• Zinc plating
• Nickel plating
• Black oxide treatment

Customers can provide engineering drawings, CAD files, samples, or performance requirements. Our engineers assist with spring design optimization, prototype development, and mass production solutions.

Our engineering team provides technical assistance including spring calculation, material selection, and performance optimization.

We support sample production and testing to verify spring dimensions, load performance, and installation compatibility.

With advanced spring manufacturing equipment, we support both small-volume orders and large-scale production requirements.

Each spring undergoes strict inspection including material inspection, dimension measurement, hook size inspection, load testing, and surface quality inspection.

We provide complete solutions from design analysis and tooling development to production and delivery.

Our team provides technical consultation, order tracking, and continuous customer support.

Standard packaging includes plastic bags, carton boxes, bulk packaging, and customized labels. For large quantity orders: export cartons, pallet packaging, and wooden cases.

Products are carefully packed to prevent deformation, scratches, corrosion, and transportation damage.

Available shipping methods: express shipping (DHL, FedEx, UPS), air freight, sea freight, and customer-designated logistics.

Trade terms: EXW, FOB, CIF, DDP. Lead time depends on spring specifications, tooling requirements, and order quantity.

The standard material is SUS304 stainless steel, which provides excellent corrosion resistance and durability. SUS316 and other spring materials are also available.

An extension spring works by pulling components together with tensile force, while a compression spring works by resisting compressive loads.

Yes. We provide customized solutions for wire diameter, spring length, hook design, coil diameter, and tension force.

They are widely used in automotive parts, machinery, electrical equipment, appliances, furniture hardware, and industrial automation systems.

Yes. We support OEM production based on customer drawings, CAD files, samples, or technical requirements.