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4004CS - 8.25 Inch High Carbon Steel Extension Springs

The 4004CS is a regular extension spring manufactured by Century Spring. It is made from High Carbon steel and has a black oxide finish. This spring has a wire diameter of 0.25 inches, an outside diameter of 1.938 inches, and a free length of 8.25 inches. It has an initial tension of 54 Pound and a maximum deflection of 3.4 inches. The 4004CS has a spring rate of 50 inches per pound and a maximum load of 221 Pound Force. It features machine hook ends and is wound in a left direction. This regular extension spring is suitable for various applications.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. We understand the importance of timely delivery, which is why we ensure that our products, including the 4004CS, are readily available for prompt shipment. In addition, all our springs are proudly made in the United States. With our commitment to quality and efficiency, Century Spring is the trusted choice for all your spring needs.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Black Oxide
Initial Tension 54 lb
Length 8.25 in
Material High Carbon Steel
Outside Diameter 1.938 in
Part Type Standard
Rate 50 lbs/in
SKU 4004CS
Sugg Max Deflection 3.4 in
Sugg Max Load 221 lbf
Wind Direction Left
Wire Diameter 0.25 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Black Oxide
Initial Tension 24.49 kg
Length 209.55 mm
Material High Carbon Steel
Outside Diameter 49.23 mm
Part Type Standard
Rate 8.76 N/mm
SKU 4004CS
Sugg Max Deflection 86.36 mm
Sugg Max Load 983.01 N
Wind Direction Left
Wire Diameter 6.35 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $52.25
50 - 149 $49.64
150 - 299 $47.03
300 - 499 $44.42
500 - 749 $39.19
750 - 999 $33.97
1000+ Call for price