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633CS - 3.50 Inch High Carbon Steel Extension Springs

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

The 633CS is a regular extension spring manufactured by Century Spring. It features machine hook ends and a zinc finish. With a free length of 3.5 inches and a wire diameter of 0.135 inches, this spring is made from High Carbon steel. It has an initial tension of 34 pounds and a maximum deflection of 0.68 inches. The 633CS can handle a maximum load of 107 pounds and has a rate of 107 inch-pounds. Its outside diameter measures 0.75 inches. This standard-sized spring is designed for various applications where extension and flexibility are required.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. We understand the importance of timely delivery for your projects, which is why we prioritize efficient shipping methods. Our products, including the 633CS, are proudly made in the United States, ensuring high-quality craftsmanship and adherence to industry standards. With our commitment to customer satisfaction, you can rely on Century Spring to provide the springs you need, when you need them.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 34 lb
Length 3.5 in
Material High Carbon Steel
Outside Diameter 0.75 in
Part Type Standard
Rate 107 lbs/in
SKU 633CS
Sugg Max Deflection 0.68 in
Sugg Max Load 107 lbf
Wind Direction Left
Wire Diameter 0.135 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 15.42 kg
Length 88.9 mm
Material High Carbon Steel
Outside Diameter 19.05 mm
Part Type Standard
Rate 18.74 N/mm
SKU 633CS
Sugg Max Deflection 17.27 mm
Sugg Max Load 475.94 N
Wind Direction Left
Wire Diameter 3.43 mm