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5599CS - 7.81 Inch High Carbon Steel Extension Springs

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

The 5599CS is a regular extension spring by Century Spring. It features machine hook ends and a durable zinc finish. This spring has a free length of 7.81 inches and an initial tension of 9 pounds. Made from High Carbon steel, it has a maximum deflection of 5 inches and can handle a maximum load of 43 pound force. With an outside diameter of 0.843 inches and a wire diameter of 0.105 inches, the 5599CS has a spring rate of 6.8 lbs/inch. It is designed for standard applications that require a left wind direction.

At Century Spring, we pride ourselves on our fast shipping and extensive stock inventory. Our springs, including the 5599CS, are proudly made in the United States. With our efficient shipping process and ample supply, we ensure that customers can quickly receive the high-quality springs they need for their projects.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 9 lb
Length 7.81 in
Material High Carbon Steel
Outside Diameter 0.843 in
Part Type Standard
Rate 6.8 lbs/in
SKU 5599CS
Sugg Max Deflection 5 in
Sugg Max Load 43 lbf
Wind Direction Left
Wire Diameter 0.105 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 4.08 kg
Length 198.37 mm
Material High Carbon Steel
Outside Diameter 21.41 mm
Part Type Standard
Rate 1.19 N/mm
SKU 5599CS
Sugg Max Deflection 127 mm
Sugg Max Load 191.26 N
Wind Direction Left
Wire Diameter 2.67 mm