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551CS - 2.88 Inch High Carbon Steel Extension Springs

The 551CS is a regular extension spring manufactured by Century Spring. It is made from High Carbon steel and has a zinc finish. This spring has a wire diameter of 0.091 inches, an outside diameter of 0.5 inches, and a free length of 2.88 inches. It has an initial tension of 16 Pound and a maximum deflection of 0.59 inches. The 551CS has a spring rate of 60 inches per pound and a maximum load of 51 Pound Force. It features machine hook ends and a left wind direction. This 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 551CS, are readily available. As a company based in the United States, we prioritize quality and reliability. With Century Spring, you can count on receiving your springs quickly and efficiently for your projects.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 16 lb
Length 2.88 in
Material High Carbon Steel
Outside Diameter 0.5 in
Part Type Standard
Rate 60 lbs/in
SKU 551CS
Sugg Max Deflection 0.59 in
Sugg Max Load 51 lbf
Wind Direction Left
Wire Diameter 0.091 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 7.26 kg
Length 73.15 mm
Material High Carbon Steel
Outside Diameter 12.7 mm
Part Type Standard
Rate 10.51 N/mm
SKU 551CS
Sugg Max Deflection 14.99 mm
Sugg Max Load 226.85 N
Wind Direction Left
Wire Diameter 2.31 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $4.23
50 - 149 $4.02
150 - 299 $3.81
300 - 499 $3.60
500 - 749 $3.18
750 - 999 $2.75
1000+ Call for price