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5638CS - 2.88 Inch Spring Steel Extension Springs

The 5638CS is a regular extension spring manufactured by Century Spring. It is made from spring steel and features a zinc finish. This spring has a wire diameter of 0.057 Inch and an outside diameter of 0.562 inches. With a free length of 2.88 Inch and an initial tension of 2 Pound, the 5638CS offers a maximum deflection of 2.9 Inch and a maximum load capacity of 11 Pound Force. It has full loop ends and a spring rate of 3.2 inches per pound. This standard extension spring is designed for various applications, providing reliable performance and flexibility.

At Century Spring, we prioritize fast shipping and maintain a significant inventory of our products. Our springs, including the 5638CS, are proudly made in the United States. With our efficient shipping process and ample supply, we ensure that customers can quickly receive the springs they need for their projects. Trust Century Spring for high-quality springs and reliable service.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Full Loop
Finish Zinc
Initial Tension 2 lb
Length 2.88 in
Material Spring Steel
Outside Diameter 0.562 in
Part Type Standard
Rate 3.2 lbs/in
SKU 5638CS
Sugg Max Deflection 2.9 in
Sugg Max Load 11 lbf
Wind Direction Left
Wire Diameter 0.057 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Full Loop
Finish Zinc
Initial Tension 0.91 kg
Length 73.15 mm
Material Spring Steel
Outside Diameter 14.27 mm
Part Type Standard
Rate 0.56 N/mm
SKU 5638CS
Sugg Max Deflection 73.66 mm
Sugg Max Load 48.93 N
Wind Direction Left
Wire Diameter 1.45 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $3.88
50 - 149 $3.69
150 - 299 $3.50
300 - 499 $3.30
500 - 749 $2.91
750 - 999 $2.53
1000+ Call for price