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B1-66CS - 1.97 Inch Spring Steel Extension Springs

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Estimated Lead Time

The B1-66CS is a regular extension spring by Century Spring. It is made from Spring Steel and has a gold iridite finish. This spring has a wire diameter of 0.038 inches, an outer diameter of 0.359 inches, and a free length of 1.97 inches. It has an initial tension of 0.8 Pound and a maximum deflection of 1.9 inches. The B1-66CS has a spring rate of 2.4 lbs/inch and a maximum load of 5.4 Pound Force. It is a full loop spring, meaning the ends are rounded. The B1-66CS is a standard extension spring suitable for various applications.

At Century Spring, we offer fast shipping and maintain a significant stock inventory. Our springs, including the B1-66CS, 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 Full Loop
Finish Gold Iridite
Initial Tension 0.8 lb
Length 1.97 in
Material Spring Steel
Outside Diameter 0.359 in
Part Type Standard
Rate 2.4 lbs/in
SKU B1-66CS
Sugg Max Deflection 1.9 in
Sugg Max Load 5.4 lbf
Wire Diameter 0.038 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Full Loop
Finish Gold Iridite
Initial Tension 0.36 kg
Length 50.04 mm
Material Spring Steel
Outside Diameter 9.12 mm
Part Type Standard
Rate 0.42 N/mm
SKU B1-66CS
Sugg Max Deflection 48.26 mm
Sugg Max Load 24.02 N
Wire Diameter 0.97 mm