"Our precision-engineered extension springs feature secure end loops and deliver reliable tension force. From small extension springs for precise applications to larger sizes, these springs effectively resist pulling forces and return to their original length."
Stock Springs - Browse our extensive range of ready-to-ship compression springs for immediate delivery
Spring Designs - Select your preferred dimensions from our proven spring designs for custom manufacture
Bespoke Option - Get compression springs manufactured to your exact specifications and requirements
Compression | Extension | Spring Lengths

| Compression Springs | Extension Springs | |
| Working Length |
Its is not advisable to use more than 80% of the maximum possible deflection. |
We recommend a safe extended length for our springs |
| End Coils | Up to 0.5mm wire - closed only. Over 0.5mm wire - closed & ground |
Full loops are similar to outside diameter. Loop end positions may vary. |
| Tolerances | British Standard - BS 1726: Part1:Grade 2 |
British Standard - BS 1726: Part2:Grade 2 |
| Materials | Carbon Steel Wire / Music Wire - British Standard BS5216, Grade ND3. | |
| Winding | Springs are normally right wound, however this may vary. | |
| Finish | Springs are stress relieved at appropriate temperatures, and stock springs are supplied in a plain finish, lightly oiled. |
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