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631CS - 10 Inch High Carbon Steel Extension Springs

Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours

The 631CS is a regular extension spring manufactured by Century Spring. It is made from High Carbon steel and features a zinc finish to enhance durability. This spring has a wire diameter of 0.148 Inch and an outside diameter of 1.25 inches. Its free length measures 10 inches, and it has an initial tension of 18 Pound. The 631CS has a maximum deflection of 6.6 Inch and a maximum load capacity of 77 Pound Force. With a spring rate of 9.2 lbs/inch, it offers reliable performance for various applications. The 631CS is equipped with machine hook ends, ensuring secure attachment.

Century Spring takes pride in its fast shipping and extensive stock inventory. We understand the urgency of your projects, which is why we strive to deliver your springs promptly. With our significant stock, you can count on finding the 631CS and other springs you need for your applications. Additionally, all our springs are proudly made in the United States, guaranteeing high-quality craftsmanship and supporting local manufacturing. Trust Century Spring for reliable shipping, abundant stock, and American-made excellence.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 18 lb
Length 10 in
Material High Carbon Steel
Outside Diameter 1.25 in
Part Type Standard
Rate 9.2 lbs/in
SKU 631CS
Sugg Max Deflection 6.6 in
Sugg Max Load 77 lbf
Wind Direction Left
Wire Diameter 0.148 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 8.16 kg
Length 254 mm
Material High Carbon Steel
Outside Diameter 31.75 mm
Part Type Standard
Rate 1.61 N/mm
SKU 631CS
Sugg Max Deflection 167.64 mm
Sugg Max Load 342.5 N
Wind Direction Left
Wire Diameter 3.76 mm