Tension Springs
Verified by Mel Sykes, Industrial Supply Chain Specialist - April 2026
| Specification | Details |
|---|---|
| Types | Close wound with hooks, extension springs, drawbar springs |
| Hook types | Machine hook, crossover centre, side loop, extended hook |
| Materials | Music wire, stainless 302, phosphor bronze |
| Standards | BS 1726 Part 1, EN 13906-2 |
What are Tension Springs?
Tension springs are mechanical components designed to resist tensile forces and store energy when stretched. They're commonly used in automotive suspension systems, industrial machinery, and medical devices.
Types and variants
Tension springs come in various types including close wound with hooks, extension springs, and drawbar springs. Close wound tension springs have coils that touch each other and are typically fitted with machine hooks, crossover centre hooks, side loops, or extended hooks for attachment to other components. These springs range from 25mm to 100mm in length and can handle loads up to 3kN.
Materials and specifications
Tension springs are made from materials such as music wire (A2-70), stainless steel 302, and phosphor bronze. Music wire is the most common choice for its strength and flexibility, while stainless steel offers corrosion resistance in harsh environments. Phosphor bronze provides excellent fatigue life and durability.
Standards like BS 1726 Part 1 and EN 13906-2 ensure consistency in design and performance. These standards specify dimensions, tolerances, and mechanical properties for different types of tension springs.
Selection criteria
Choosing the right spring involves considering factors such as load requirements, operating environment, temperature range, and space constraints. For example, stainless steel is preferred in marine or chemical environments due to its corrosion resistance. High-temperature applications may require phosphor bronze springs with a maximum service temperature of 200°C.
UK suppliers
MLC lists verified suppliers from Companies House that meet industry standards for quality and reliability. These include companies like CBM, BIAFD, BTMA, and BPMA, which specialise in engineering components and offer certified tension springs.
Common applications
Tension springs are widely used across various industries. In automotive manufacturing, they help with shock absorption in suspension systems. Medical devices use them for retractable mechanisms in surgical instruments. Industrial machinery relies on them for energy storage in clutches and brakes. Each application requires specific dimensions and material grades to ensure optimal performance and longevity.
Understanding these factors helps procurement managers and maintenance engineers select the best tension springs for their projects, ensuring reliable operation under demanding conditions.
References
Verified UK Suppliers
| Company | Company No. | Location |
|---|---|---|
| Eco Electric Limited | 05243358 | Unit 3 D, Betton Way, Moreton Hampstead, Devon, TQ |
| Kato-Entex Limited | 02853659 | Glaisdale Drive, Bilborough, Nottingham, NG8 4JY |
| Fb Chain Limited | 01958761 | C/O F B Chain Ltd, Works Road, Letchworth Garden C |
| Springmasters (Scotland) Limited | SC081565 | Unit 95, 44/46 Morningside Road, Edinburgh, EH10 4 |
| Gold Bros. Limited | 02592331 | 336a Regents Park Road, Finchley, London, N3 2LN |
Frequently Asked Questions
What are Tension Springs?
Tension Springs are engineering components used in industrial applications. Browse verified UK suppliers on MLC.
Where can I buy Tension Springs in the UK?
MLC lists verified UK tension springs suppliers with Companies House data. Browse by product category or search by location.
What are tension springs and where are they commonly used?
Tension springs are mechanical components designed to resist tensile forces and store energy when stretched. They're commonly used in automotive suspension systems, industrial machinery, and medical devices.
Can you list the types of tension springs available based on mlc.org.uk specifications?
The main types include close wound with hooks, extension springs, and drawbar springs. Close wound tension springs have coils that touch each other and are typically fitted with machine hooks, crossover centre hooks, side loops, or extended hooks.
What materials are used to manufacture tension springs according to mlc.org.uk?
Tension springs can be made from music wire, stainless steel 302, and phosphor bronze. These materials ensure durability and resistance in various applications.
How do I choose the right type of hook for my tension spring application?
The choice depends on the specific requirements such as space constraints or load capacity. Common options include machine hooks, crossover centre hooks, side loops, and extended hooks.
What are the standards applicable to tension springs mentioned on mlc.org.uk?
Tension springs adhere to BS 1726 Part 1 and EN 13906-2 standards, ensuring compliance with industry regulations for performance and safety.
How can I find UK suppliers of tension springs based on mlc.org.uk information?
You can visit mlc.org.uk or contact their contributors like Mel Sykes to source high-quality tension springs that meet British standards and specifications.
What is the typical length range and load capacity for close wound tension springs according to mlc.org.uk?
Close wound tension springs typically range from 25mm to 100mm in length and can handle loads up to 3kN, making them suitable for a variety of mechanical applications.
Are there any cost considerations when purchasing tension springs from UK suppliers?
The cost of tension springs varies based on material type, size, and load capacity. It's advisable to contact suppliers like those listed on mlc.org.uk for custom quotes tailored to your specific needs.