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Extension Springs

Extension springs are available in a variety of materials, the most common being carbon steel or stainless steel, depending on the environment into which the spring is entering. End coils can be single or double German loop, single or double English loop, side loop, extended hook loop or even no loops according to application. More technical ends are available i.e. swivel hook, reduced/enlarged diameter loop or screw end on request. Wire size from 0.25 mm (0.010″) up to 19 mm (0.750″). We have facilities for both hand-made and automated spring manufacture.

Here at Davies Springs we do not just talk about springs but we actually have the machinery and expertise to manufacture and therefore we can create a wide variety of solutions.

Q . Are Extension Springs and Torsion Springs the same?

A. No, but they are similar. On a door for example an extension spring will expand and contract when operating.

A torsion spring in such an application will last longer because they are sturdier and turn during operation.

Which Do I Need Torsion or Extension Spring

The simplest answer is get in touch with us and explain what is the function of the spring. How Many cycles do you expect it to last? Typically torsion springs will last longer than extension springs.

From your information we will be able to offer you some options., we supply a huge range of springs will be able to come up with a first class solution.

extension spring

Why use Davies Springs?

Davies Springs supply a wide range of customers from stockists to end manufacturers. From basic springs to more complex designs we are equipped to meet your needs.

Please call 01527 500 710.

Out of hours please use our contact form and we will call you back.

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    Materials For Making Springs Wire Forms & Pins

    Here at Davies Springs we are constantly meeting the challenge of working with new materials as well as the standard options, this is a complex subject and the simple answer is please talk to us and we can advise on the various solutions: –


    • · Stainless steel (302, 316, 17/7 or 18/8)
    • · Carbon Steel / Music Wire
    • · Piano Wire

    Exotic Spring Making Materials

    Exotic materials are another possibility because of their unique chemistry, again the best answer is please contact Davies Springs to discuss your needs – even some of our long standing customers are unaware of the options which are available: –

    • · Inconel 600, 601, 625, 718, X750
    • · Nimonic 90
    • · Monel 400
    • · Oil Tempered Wires
    • · Phosphor Bronze
    • · Hastelloy B-2, B-3, C-4, C-22, C-276, C-2000, G-30, ‘X’
    • · Duratherm 600
    • · Phynox aka Eligloy
    • · MP35N

    Oil Tempered Wire –
    BS2803 Pre-hardened Carbon

    • · Chrome vanadium BS2803 CrVd pre hardened alloy
    • · Silicon chrome – BS 2803 SiCr Pre hardened alloy

    If you cannot see what you are looking for, it maybe no more than we have not included it on the above list, please do call on 01527 500 710.