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B4-4CS - 0.73 Inch Music Wire Compression Springs

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Estimated Lead Time

The B4-4CS is a regular compression spring manufactured by Century Spring. It is made from Music Wire and has no finish. This spring has a wire diameter of 0.018 inches, an outside diameter of 0.125 inches, and a free length of 0.73 inches. It has a spring rate of 7.5 lbs/inch and a maximum load of 2.7 Pound Force. The B4-4CS is a closed-end spring, meaning the ends are squared. It has a solid length of 0.35 Inch and a total of 18.5 coils. This standard compression spring is suitable for various applications.

Century Spring offers fast shipping and maintains a significant stock inventory. We are proud to manufacture our products, including the B4-4CS, 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 None
Free Length 0.73 in
Inside Diameter 0.089 in
Material Music Wire
Outside Diameter 0.125 in
Part Type Standard
Rate 7.5 lbs/in
SKU B4-4CS
Solid Length 0.35 in
Suggested Max Deflection 0.36 in
Suggested Max Load 2.7 lbf
Total Coils 18.5
Wire Diameter 0.018 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Closed
Finish None
Free Length 18.54 mm
Inside Diameter 2.26 mm
Material Music Wire
Outside Diameter 3.18 mm
Part Type Standard
Rate 1.31 N/mm
SKU B4-4CS
Solid Length 8.89 mm
Suggested Max Deflection 9.14 mm
Suggested Max Load 12.01 N
Total Coils 18.5
Wire Diameter 0.46 mm