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O-40CS - 0.75 Inch Music Wire Compression Springs

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The O-40CS is a regular compression spring manufactured by Century Spring. This spring is made from Music Wire and has a zinc finish. It has a wire diameter of 0.021 inches, an outside diameter of 0.234 inches, and a free length of 0.75 inches. The O-40CS has a spring rate of 2.5 lbs/inch and a maximum load of 1.1 Pound Force. It is a closed-end spring, meaning the ends are closed. The O-40CS is a standard compression 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-40CS, are proudly made in the United States. With our efficient 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 Closed
Finish Zinc
Free Length 0.75 in
Inside Diameter 0.192 in
Material Music Wire
Outside Diameter 0.234 in
Part Type Standard
Rate 2.5 lbs/in
SKU O-40CS
Solid Length 0.31 in
Suggested Max Deflection 0.44 in
Suggested Max Load 1.1 lbf
Total Coils 13.6
Wire Diameter 0.021 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Closed
Finish Zinc
Free Length 19.05 mm
Inside Diameter 4.88 mm
Material Music Wire
Outside Diameter 5.94 mm
Part Type Standard
Rate 0.44 N/mm
SKU O-40CS
Solid Length 7.87 mm
Suggested Max Deflection 11.18 mm
Suggested Max Load 4.89 N
Total Coils 13.6
Wire Diameter 0.53 mm