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F-81CS - 1 Inch High Carbon Steel Extension Springs

Inventory Status
Estimated Lead Time

The F-81CS is a regular extension spring manufactured by Century Spring. It is made from High Carbon steel and has a gold iridite finish. This spring has a wire diameter of 0.032 inches, an outside diameter of 0.25 inches, and a free length of 1 inches. It has an initial tension of 0.9 Pound and a maximum deflection of 0.55 inches. The F-81CS has a spring rate of 7.5 lbs/inch and a maximum load of 5 Pound Force. It features machine hook ends and is suitable for various applications.

At Century Spring, we pride ourselves on our fast shipping and extensive stock inventory. We understand the importance of timely delivery and strive to ensure that our customers receive their springs promptly. Additionally, all of our products, including the F-81CS, are proudly made in the United States. With our commitment to quality and availability, you can rely on Century Spring to provide the springs you need for your projects.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Gold Iridite
Initial Tension 0.9 lb
Length 1 in
Material High Carbon Steel
Outside Diameter 0.25 in
Part Type Standard
Rate 7.5 lbs/in
SKU F-81CS
Sugg Max Deflection 0.55 in
Sugg Max Load 5 lbf
Wind Direction Left
Wire Diameter 0.032 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Gold Iridite
Initial Tension 0.41 kg
Length 25.4 mm
Material High Carbon Steel
Outside Diameter 6.35 mm
Part Type Standard
Rate 1.31 N/mm
SKU F-81CS
Sugg Max Deflection 13.97 mm
Sugg Max Load 22.24 N
Wind Direction Left
Wire Diameter 0.81 mm