Garage Door Torsion Spring Wire Size and Color Chart

Safety warning: this chart is for identifying DASMA torsion-spring wire colors only. DASMA says its chart is not for homeowners or maintenance personnel to replace garage-door springs. Spring replacement should be performed only by a trained door-systems technician. Do not loosen, wind, remove, or adjust a torsion spring.

DASMA Torsion Spring Wire Color Chart

The list below reproduces the wire-diameter color codes in DASMA Technical Data Sheet 171 for torsion springs used on sectional doors. The same color appears for multiple wire diameters, so color alone does not identify a complete spring.

What the Color Code Identifies

DASMA color coding identifies the wire diameter shown in its chart. It does not specify the spring’s inside diameter, length, stretch, material, or finish. Those details and the door system all matter when a technician selects a replacement.

If a spring needs service, do not measure or handle it while it is installed or under tension. Contact a trained door-systems technician and provide any model information or labels that can be read without touching the spring.

Source

DASMA Technical Data Sheet 171 lists official torsion and extension spring color codes. DASMA describes it as a manufacturer reference, says it is not for homeowners or maintenance personnel to replace springs, and says spring replacement should be performed by a trained door-systems technician.