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B9-21CS - 0.50 Inch Spring Steel Compression Springs

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Estimated Lead Time

The B9-21CS is a regular compression spring manufactured by Century Spring. Made from spring steel, this spring has a wire diameter of 0.075 inches, an outside diameter of 0.437 inches, and a length of 0.5 Inch when not compressed. It has a spring rate of 274 lbs/inch and can handle a maximum load of 24 Pound Force. The B9-21CS is a closed and ground spring, ensuring precise performance. It consists of 5.5 total coils and has a solid length of 0.41 inches. With its reliable construction and standard measurement units, this spring is suitable for a variety of applications.

At Century Spring, we pride ourselves on fast shipping and a substantial stock inventory. Our springs, including the B9-21CS, are proudly made in the United States. With our efficient shipping and ample supply, Century Spring ensures that customers can quickly receive the high-quality springs they need for their projects.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Closed & Ground
Finish None
Free Length 0.5 in
Inside Diameter 0.287 in
Material Spring Steel
Outside Diameter 0.437 in
Part Type Standard
Rate 274 lbs/in
SKU B9-21CS
Solid Length 0.41 in
Suggested Max Deflection 0.09 in
Suggested Max Load 24 lbf
Total Coils 5.5
Wire Diameter 0.075 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Closed & Ground
Finish None
Free Length 12.7 mm
Inside Diameter 7.29 mm
Material Spring Steel
Outside Diameter 11.1 mm
Part Type Standard
Rate 47.98 N/mm
SKU B9-21CS
Solid Length 10.41 mm
Suggested Max Deflection 2.29 mm
Suggested Max Load 106.75 N
Total Coils 5.5
Wire Diameter 1.91 mm