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O-121CS - 0.41 Inch Music Wire Extension Springs

Inventory Status
Estimated Lead Time

The O-121CS is an extension spring manufactured by Century Spring. It is made from high-quality Music Wire with a standard finish. This spring has a wire diameter of 0.019 Inch and an outside diameter of 0.188 inches. Its free length is 0.41 inches, and it has an initial tension of 0.2 Pound. The O-121CS has a maximum deflection of 0.34 Inch and can withstand a maximum load of 1.9 Pound Force. It features machine hook ends and a left wind direction. This regular extension spring is suitable for various applications.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. We understand the importance of timely delivery, and our efficient shipping ensures that you receive your springs quickly. Moreover, all our products, including the O-121CS, are proudly made in the United States. With our commitment to quality and availability, Century Spring is your trusted source for springs for any project.

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 0.2 lb
Length 0.41 in
Material Music Wire
Outside Diameter 0.188 in
Part Type Standard
Rate 5.2 lbs/in
SKU O-121CS
Sugg Max Deflection 0.34 in
Sugg Max Load 1.9 lbf
Wind Direction Left
Wire Diameter 0.019 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 0.09 kg
Length 10.41 mm
Material Music Wire
Outside Diameter 4.78 mm
Part Type Standard
Rate 0.91 N/mm
SKU O-121CS
Sugg Max Deflection 8.64 mm
Sugg Max Load 8.45 N
Wind Direction Left
Wire Diameter 0.48 mm