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5557CS - 7.25 Inch Spring Steel Extension Springs

The 5557CS is a regular extension spring manufactured by Century Spring. It features a machine hook on both ends for easy installation. This spring is made from spring steel and has a zinc finish for added durability. With a free length of 7.25 inches and an initial tension of 9 pounds, it provides the perfect balance of strength and flexibility. The 5557CS has a maximum deflection of 5.3 inches and can handle a maximum load of 46 pound force. Its 1-inch outside diameter and 0.115-inch wire diameter ensure a secure fit for your specific application. This left-wound spring has a rate of 7 inches per pound, making it ideal for a wide range of projects.

At Century Spring, we understand the importance of fast shipping and maintaining a large inventory. We take pride in offering prompt delivery of our high-quality springs, including the 5557CS. All our products are proudly made in the United States, ensuring superior craftsmanship and reliability. With our extensive stock and efficient shipping, Century Spring is committed to providing customers with the springs they need, exactly when they need them.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 9 lb
Length 7.25 in
Material Spring Steel
Outside Diameter 1 in
Part Type Standard
Rate 7 lbs/in
SKU 5557CS
Sugg Max Deflection 5.3 in
Sugg Max Load 46 lbf
Wind Direction Left
Wire Diameter 0.115 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 4.08 kg
Length 184.15 mm
Material Spring Steel
Outside Diameter 25.4 mm
Part Type Standard
Rate 1.23 N/mm
SKU 5557CS
Sugg Max Deflection 134.62 mm
Sugg Max Load 204.61 N
Wind Direction Left
Wire Diameter 2.92 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $9.03
50 - 149 $8.58
150 - 299 $8.13
300 - 499 $7.68
500 - 749 $6.78
750 - 999 $5.87
1000+ Call for price