Although typical torsion springs are close wound, special types include spaces between the coils to reduce friction. Another special type of torsion spring is the double torsion, which consists of one right-hand and one left-hand coiled section connected to work in parallel.

Although commonly made from round wire, PCS can produce torsion springs from the following wire forms:

• Round wire
• Rectangular wire
• Square wire
• Special cross-section wire

Wire diameter range for torsion springs is from 0.005" to 0.626".

Leg configurations for torsion springs can range from basic straight legs to bent, hooked, or formed to conform to your custom application.