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B-51CS - 3.50 Inch Music Wire Compression Springs

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The B-51CS is a regular compression spring manufactured by Century Spring. It is made from Music Wire and has a zinc finish. This spring has a wire diameter of 0.032 inches, an outside diameter of 0.281 inches, and a free length of 3.5 Inches. It has a spring rate of 6.1 lbs/inch and a maximum load of 6.5 Pound Force. The B-51CS is a closed-end spring, meaning the ends are squared. It is a standard compression spring and is suitable for various applications.

At Century Spring, we offer fast shipping and maintain a significant stock inventory. Our products, including the B-51CS, 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 3.5 in
Inside Diameter 0.217 in
Material Music Wire
Outside Diameter 0.281 in
Part Type Standard
Rate 6.1 lbs/in
SKU B-51CS
Solid Length 0.61 in
Suggested Max Deflection 1.1 in
Suggested Max Load 6.5 lbf
Total Coils 18
Wire Diameter 0.032 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Closed
Finish Zinc
Free Length 88.9 mm
Inside Diameter 5.51 mm
Material Music Wire
Outside Diameter 7.14 mm
Part Type Standard
Rate 1.07 N/mm
SKU B-51CS
Solid Length 15.49 mm
Suggested Max Deflection 27.94 mm
Suggested Max Load 28.91 N
Total Coils 18
Wire Diameter 0.81 mm