DIN 2089 is the standard cited for torsion springs. This page sets out what the standard controls for this part, reproduces the dimensional table supplied against it, and notes the related designations referenced on drawings.
DIN 2089 — Scope
The table below lists the dimensions catalogued for torsion springs under DIN 2089. The scope of DIN 2089 itself is not summarised here — where a figure matters, confirm it against the published document.
Tolerance & Product Grades
Product grade is a concept from dimensional fastener standards and does not apply to DIN 2089. Tolerances for this part are the limits shown against each dimension in the table.
Dimensions Specified by DIN 2089
| Wire dia d (mm) | Inner diameter Di (mm) | Outer diameter De (mm) | Length Lo (mm) | Coils n | Torque range | Material | Reference standard |
|---|---|---|---|---|---|---|---|
| 0.5 | 4.0 | 5.0 | 10 | 6 | 5~15Nmm | Spring steel | DIN 2089 |
| 0.6 | 5.0 | 6.2 | 12 | 6 | 8~25Nmm | Spring steel | DIN 2089 |
| 0.8 | 6.0 | 7.6 | 15 | 6 | 18~55Nmm | Spring steel | DIN 2089 |
| 1.0 | 8.0 | 10.0 | 18 | 6 | 35~100Nmm | Spring steel | DIN 2089 |
| 1.2 | 9.0 | 11.4 | 20 | 6 | 65~190Nmm | Spring steel | DIN 2089 |
| 1.5 | 12.0 | 15.0 | 25 | 6 | 150~420Nmm | Spring steel | DIN 2089 |
| 2.0 | 15.0 | 19.0 | 30 | 6 | 380~1100Nmm | Spring steel | DIN 2089 |
| 2.5 | 20.0 | 25.0 | 35 | 6 | 900~2500Nmm | Spring steel | DIN 2089 |
| 3.0 | 25.0 | 31.0 | 40 | 6 | 1800~5000Nmm | Spring steel | DIN 2089 |
| 4.0 | 32.0 | 40.0 | 50 | 6 | 5500~15000Nmm | Spring steel | DIN 2089 |
Companion Standards
A complete specification for torsion springs normally cites several documents: one for the geometry, one for the material or mechanical properties, and one for the finish. DIN 2089 is one of them, not all of them.
When to Specify DIN 2089
DIN 2089 is still widely used in European mechanical engineering and as a cross-reference on legacy drawings; its ISO equivalent is preferred for new designs.
Custom manufacturing · Made to drawing
Need a spring to this standard in a non-standard size?
Parts built to DIN 2089 are already in the catalog, so a special is usually a variation on existing tooling rather than a new design — which is what keeps the cost down.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
