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21CS - 2.75 Inch High Carbon Compression Springs

Inventory Status
Estimated Lead Time

The 21CS is a regular compression spring manufactured by Century Spring. It is made from High Carbon material and has a zinc finish. This spring has a wire diameter of 0.054 inches, an outside diameter of 0.625 inches, and a free length of 2.75 inches. It has a spring rate of 5.8 lbs/inch and a maximum load of 9.1 Pound Force. The 21CS is a closed-end spring, meaning the ends are closed. It is a standard compression spring suitable for various applications.

At Century Spring, we offer fast shipping and maintain a significant stock inventory. Our products, including the 21CS, 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 Closed
Finish Zinc
Free Length 2.75 in
Inside Diameter 0.517 in
Material Spring Steel
Outside Diameter 0.625 in
Part Type Standard
Rate 5.8 lbs/in
SKU 21CS
Solid Length 0.77 in
Suggested Max Deflection 1.6 in
Suggested Max Load 9.1 lbf
Total Coils 13.3
Wire Diameter 0.054 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Closed
Finish Zinc
Free Length 69.85 mm
Inside Diameter 13.13 mm
Material Spring Steel
Outside Diameter 15.88 mm
Part Type Standard
Rate 1.02 N/mm
SKU 21CS
Solid Length 19.56 mm
Suggested Max Deflection 40.64 mm
Suggested Max Load 40.48 N
Total Coils 13.3
Wire Diameter 1.37 mm