Garage Door Torsion Spring Wire Size Chart
Safety note: torsion springs are under dangerous stored energy. Use this chart for identification and planning only. Do not loosen set screws, remove drums, or replace torsion springs unless you are trained and have the correct winding bars and safety procedure.
Torsion Spring Wire Size And Color Chart
| Wire diameter | DASMA color | Approx. wire gauge note | Identification note |
|---|---|---|---|
| 0.177 in | Gold | Common residential range | Measure wire to confirm |
| 0.1875 in | Blue | Common residential range | Measure 20 coils for accuracy |
| 0.192 in | Orange | Common residential range | Color can be faded or repainted |
| 0.207 in | Yellow | Common residential range | Confirm inside diameter and length too |
| 0.2187 in | White | Common residential range | Do not rely on color alone |
| 0.2253 in | Red | Common residential range | Wire size is only one spring spec |
| 0.2343 in | Brown | Common residential range | Common on heavier doors |
| 0.2437 in | Green | Common residential range | Confirm door weight and spring pair |
| 0.250 in | Gold | Heavier residential/light commercial | Professional sizing recommended |
| 0.2625 in | Blue | Heavier residential/light commercial | Professional sizing recommended |
| 0.273 in | Orange | Heavier residential/light commercial | Professional sizing recommended |
| 0.283 in | Yellow | Heavy spring range | Professional sizing recommended |
| 0.295 in | White | Heavy spring range | Professional sizing recommended |
| 0.3065 in | Brown | Heavy spring range | Professional sizing recommended |
| 0.3195 in | Green | Heavy spring range | Professional sizing recommended |
How To Measure Torsion Spring Wire
- With the door down and the spring untouched, measure the length of 20 coils.
- Divide that measurement by 20 to estimate wire diameter.
- Repeat with 40 coils and divide by 40 for a second check.
- Record wire diameter, inside diameter, spring length, wind direction, and whether the spring is left- or right-wound.
Important Replacement Notes
- Color codes identify wire diameter, not the full spring replacement spec.
- Red/black winding marks can identify spring wind direction and are different from wire-size colors.
- Two-spring doors should be sized as a pair, not by copying one spring blindly.
- If a spring broke, inspect cables, drums, bearings, and door balance before ordering parts.
Source Notes
Wire color references were checked against DASMA Technical Data Sheet 171 and garage door spring supplier charts. The chart is for identification only; spring replacement should follow manufacturer and professional safety guidance.
