Stainless Steel Tension Spring with Custom Hook Designs for Industrial Use

Tension Spring, also known as an Extension Spring, is a precision-engineered mechanical spring designed to absorb and store energy when stretched. It generates a pulling force between two components, helping control movement, maintain tension, and provide reliable mechanical performance in various industrial applications.

Our Stainless Steel Tension Springs are manufactured using high-quality spring materials and advanced CNC spring forming technology to ensure excellent elasticity, fatigue resistance, and dimensional accuracy. The spring coils are tightly wound under no-load conditions and designed to provide consistent extension force throughout the working range.

Made from corrosion-resistant materials such as SUS304, SUS316, SUS301 stainless steel, carbon steel, and alloy spring steel, these extension springs offer outstanding durability and stable performance in demanding environments. They are suitable for applications requiring repeated stretching cycles, high tensile strength, and long service life.

• High Elasticity & Stable Tension Force: Provides consistent pulling force during extension. Maintains stable performance under repeated stretching cycles. Suitable for precision mechanical applications.
• Premium Stainless Steel Material Options: Available materials include SUS304, SUS316, SUS301 stainless steel, carbon steel, and alloy spring steel. Features excellent corrosion resistance, high fatigue strength, and long service life.
• Precision Manufacturing: Produced with advanced CNC spring machines. Ensures accurate wire diameter, coil diameter, and free length. Supports high-volume production with consistent quality.
• Customized Hook Designs: Available end configurations include extended hooks, machine hooks, cross-center hooks, swivel hooks, and special customized hooks.
• Wide Industrial Application Range: Suitable for automation equipment, automotive components, electronic products, mechanical systems, and industrial machinery.
• Excellent Fatigue Resistance: Designed for repeated loading and unloading cycles. Maintains stable spring performance during long-term operation. Reduces replacement frequency.
• OEM & ODM Customization: Customized dimensions, materials, spring force, and surface treatments. Supports customer drawings and sample production.

• Industrial Machinery: Tension springs are widely used in industrial machines to provide controlled pulling force, return movement, and tension adjustment. Common applications include automation equipment, assembly machines, packaging machinery, and production line equipment.
• Automotive Components: Stainless steel extension springs are used in automotive systems requiring reliable mechanical tension and vibration resistance. Applications include vehicle mechanisms, seat adjustment systems, brake components, engine components, and door systems.
• Electrical and Electronic Equipment: Precision tension springs provide reliable mechanical force in electronic devices and electrical products. Applications include switch mechanisms, connectors, control devices, and electronic assemblies.
• Medical Equipment: High-precision extension springs are used in medical instruments requiring stable force control and corrosion resistance. Applications include medical devices, laboratory equipment, and precision instruments.
• Household Appliances: Used in various household products requiring compact and durable spring solutions. Applications include washing machines, refrigerators, door mechanisms, and small appliances.
• Hardware and Mechanical Products: Suitable for general mechanical assemblies requiring tension control and repeated operation.

We provide professional OEM and ODM custom tension spring manufacturing services according to customer designs and application requirements.

• Material Customization: Available materials include SUS304, SUS316, SUS301 stainless steel, carbon steel, music wire, and alloy steel. Material selection can be optimized according to corrosion resistance requirements, working environment, load requirements, and temperature conditions.
• Dimension Customization: Customized parameters include wire diameter, outer diameter, inner diameter, number of coils, free length, hook size, and hook direction.
• Spring Force Customization: We can customize initial tension, maximum extension force, working stroke, and load requirements.
• Hook Design Customization: Available customized hook structures include standard hooks, extended hooks, rotated hooks, double hooks, and special connection designs.
• Surface Treatment Customization: Options include polishing, electroplating, black oxide treatment, passivation, and anti-corrosion coating.
• Engineering Support: Our technical team provides drawing analysis, spring design optimization, prototype production, performance testing, and mass production support.

• Technical Consultation: Our engineers provide professional support for spring selection, material recommendation, load calculation, and structural optimization.
• OEM/ODM Manufacturing: We support complete customized production services including customer drawings, sample reproduction, prototype development, and mass production.
• Quality Control: Each tension spring undergoes strict inspection including material inspection, wire diameter measurement, dimension inspection, load testing, elasticity testing, and surface quality inspection.
• Product Documentation: Available documents include product specifications, inspection reports, material certificates, and quality reports.
• Global Supply Service: We provide reliable production capacity and international shipping support for global customers in industrial, automotive, and mechanical industries.

Packing: To protect springs during transportation, products are packed with plastic bags for moisture protection, carton boxes, customized trays, and export-standard packaging. For large quantity orders, we provide reinforced cartons, wooden cases, and customized packaging solutions.

Shipping Methods: We support express delivery for samples, air freight for urgent orders, and sea freight for bulk orders. Available trade terms include EXW, FOB, CIF, and DDP. Complete shipping documents and tracking information are provided.