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81CS - 3.25 Inch High Carbon Steel Extension Springs

Inventory Status
Estimated Lead Time

The 81CS is a regular extension spring manufactured by Century Spring. It features a zinc finish and is made from High Carbon steel. This spring has a wire diameter of 0.047 Inch and an outside diameter of 0.562 inches. It has a free length of 3.25 Inch and an initial tension of 0.7 Pound. With a maximum deflection of 5.8 Inch and a maximum load of 6.5 Pound Force, the 81CS is a reliable choice for various applications. Its machine hook ends make installation easy and secure.

At Century Spring, we take pride in our fast shipping and extensive inventory. We understand the importance of prompt delivery, which is why we strive to get your order to you as quickly as possible. With our significant stock of springs, including the 81CS, you can trust that we have the products you need readily available. Plus, all our springs are proudly made in the United States, ensuring high quality and supporting local manufacturing. When you choose Century Spring, you can count on reliable products and efficient service.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 0.7 lb
Length 3.25 in
Material High Carbon Steel
Outside Diameter 0.562 in
Part Type Standard
Rate 0.99 lbs/in
SKU 81CS
Sugg Max Deflection 5.8 in
Sugg Max Load 6.5 lbf
Wind Direction Left
Wire Diameter 0.047 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 0.32 kg
Length 82.55 mm
Material High Carbon Steel
Outside Diameter 14.27 mm
Part Type Standard
Rate 0.17 N/mm
SKU 81CS
Sugg Max Deflection 147.32 mm
Sugg Max Load 28.91 N
Wind Direction Left
Wire Diameter 1.19 mm