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B3-20CS - 2.50 Inch High Carbon Steel Extension Springs

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Estimated Lead Time

The B3-20CS is a regular extension spring manufactured by Century Spring. This spring is made from High Carbon steel and has a natural finish. It has a wire diameter of 0.045 inches, an outside diameter of 0.312 inches, and a free length of 2.5 inches. The B3-20CS has an initial tension of 2 Pound and a maximum deflection of 1.3 inches. It has a spring rate of 6.4 lbs/inch and can handle a maximum load of 11 Pound Force. This spring features double loop ends and is suitable for various extension spring applications.

At Century Spring, we take pride in our fast shipping and extensive inventory. We understand the importance of timely delivery and strive to ensure that our customers receive their springs quickly. With our significant stock of springs, including the B3-20CS, you can have peace of mind knowing that we have the springs you need readily available. Additionally, all our springs are proudly made in the United States, guaranteeing high-quality craftsmanship. Trust Century Spring for all your spring needs.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Double Loop
Finish None
Initial Tension 2 lb
Length 2.5 in
Material High Carbon Steel
Outside Diameter 0.312 in
Part Type Standard
Rate 6.4 lbs/in
SKU B3-20CS
Sugg Max Deflection 1.3 in
Sugg Max Load 11 lbf
Wire Diameter 0.045 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Double Loop
Finish None
Initial Tension 0.91 kg
Length 63.5 mm
Material High Carbon Steel
Outside Diameter 7.92 mm
Part Type Standard
Rate 1.12 N/mm
SKU B3-20CS
Sugg Max Deflection 33.02 mm
Sugg Max Load 48.93 N
Wire Diameter 1.14 mm