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634CS - 12 Inch High Carbon Steel Extension Springs

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

The 634CS is a regular extension spring manufactured by Century Spring. It features machine hook ends and a zinc finish. This spring has a free length of 12 inches and an initial tension of 12 pounds. Made from High Carbon steel, it has a maximum deflection of 9.2 inches and can handle a maximum load of 61 pounds. With an outside diameter of 1.188 inches and a wire diameter of 0.135 inches, the 634CS has a spring rate of 5.3 lbs/inch. It is designed for standard measurement units and has a shipping weight of 1.1155 pounds. The 634CS is a left-wind spring, suitable for a variety of applications.

At Century Spring, we pride ourselves on our fast shipping and extensive stock inventory. We understand the importance of timely delivery, and our efficient shipping processes ensure that customers receive their springs promptly. Additionally, our significant stock inventory ensures that we have a wide range of springs available, including the 634CS. We are proud to manufacture our products in the United States, maintaining high-quality standards and supporting local manufacturing. With Century Spring, you can trust that you'll receive top-notch products quickly and efficiently for all your spring needs.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 12 lb
Length 12 in
Material High Carbon Steel
Outside Diameter 1.188 in
Part Type Standard
Rate 5.3 lbs/in
SKU 634CS
Sugg Max Deflection 9.2 in
Sugg Max Load 61 lbf
Wind Direction Left
Wire Diameter 0.135 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 5.44 kg
Length 304.8 mm
Material High Carbon Steel
Outside Diameter 30.18 mm
Part Type Standard
Rate 0.93 N/mm
SKU 634CS
Sugg Max Deflection 233.68 mm
Sugg Max Load 271.33 N
Wind Direction Left
Wire Diameter 3.43 mm