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O-31CS - 1.34 Inch Music Wire Extension Springs

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The O-31CS is a regular extension spring manufactured by Century Spring. It is made from Music Wire and has a zinc finish. This spring has a wire diameter of 0.023 inches, an outer diameter of 0.188 inches, and a free length of 1.34 inches. It has an initial tension of 0.4 Pound and a maximum deflection of 1.7 inches. The O-31CS has a spring rate of 1.8 lbs/inch and a maximum load of 3.5 Pound Force. It is a full-loop spring, meaning the ends are rounded. The O-31CS is a standard extension spring suitable for various applications.

At Century Spring, we pride ourselves on fast shipping and maintaining a significant stock inventory. Our products, including the O-31CS, are proudly made in the United States. With our reliable shipping and ample supply, Century Spring ensures that customers can quickly receive the springs they need for their projects.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Full Loop
Finish Zinc
Initial Tension 0.4 lb
Length 1.34 in
Material Music Wire
Outside Diameter 0.188 in
Part Type Standard
Rate 1.8 lbs/in
SKU O-31CS
Sugg Max Deflection 1.7 in
Sugg Max Load 3.5 lbf
Wire Diameter 0.023 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Full Loop
Finish Zinc
Initial Tension 0.18 kg
Length 34.04 mm
Material Music Wire
Outside Diameter 4.78 mm
Part Type Standard
Rate 0.32 N/mm
SKU O-31CS
Sugg Max Deflection 43.18 mm
Sugg Max Load 15.57 N
Wire Diameter 0.58 mm