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5549CS - 10.40 Inch Spring Steel Extension Springs

The 5549CS is a regular extension spring manufactured by Century Spring. It is made from spring steel and features a zinc finish for added durability. This spring has a free length of 10.4 inches and an initial tension of 21 pounds. With a maximum deflection of 6.9 inches and a maximum load of 102 pound force, the 5549CS is well-suited for a variety of applications. It has an outside diameter of 1.625 inches and a wire diameter of 0.182 inches. The spring rate is 12 inches per pound. The 5549CS is designed with machine hook ends and is wound in a left direction.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. This means that you can rely on us to promptly deliver the springs you need for your projects. What's more, all of our products, including the 5549CS, are proudly made in the United States. With Century Spring, you can trust in the quality and reliability of our springs, knowing that they are manufactured right here in the USA.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 21 lb
Length 10.4 in
Material Spring Steel
Outside Diameter 1.625 in
Part Type Standard
Rate 12 lbs/in
SKU 5549CS
Sugg Max Deflection 6.9 in
Sugg Max Load 102 lbf
Wind Direction Left
Wire Diameter 0.182 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 9.52 kg
Length 264.16 mm
Material Spring Steel
Outside Diameter 41.28 mm
Part Type Standard
Rate 2.1 N/mm
SKU 5549CS
Sugg Max Deflection 175.26 mm
Sugg Max Load 453.7 N
Wind Direction Left
Wire Diameter 4.62 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $29.15
50 - 149 $27.70
150 - 299 $26.24
300 - 499 $24.78
500 - 749 $21.87
750 - 999 $18.95
1000+ Call for price