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5221CS - 2.16 Inch Spring Steel Extension Springs

The 5221CS spring from Century Spring is a regular extension spring with a machine hook on each end. It is made of spring steel and has a zinc finish. This spring has a free length of 2.16 inches and an initial tension of 0.6 pounds. It can deflect up to 2.7 inches and has a maximum load capacity of 4.3 pounds. With an outside diameter of 0.375 inches and a wire diameter of 0.036 inches, this spring has a spring rate of 1.4 inches per pound. It weighs only 0.015 pounds, making it lightweight and easy to handle. The 5221CS is a left-wound spring, suitable for various applications.

At Century Spring, we pride ourselves on our fast shipping and extensive stock inventory. We understand the importance of having the right springs when you need them. That's why we ensure quick delivery and maintain a wide range of springs in our inventory, including the 5221CS. Additionally, all our springs are proudly made in the United States, guaranteeing high quality and durability. Trust Century Spring for all your spring needs, and experience our exceptional service and reliable products.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 0.6 lb
Length 2.16 in
Material Spring Steel
Outside Diameter 0.375 in
Part Type Standard
Rate 1.4 lbs/in
SKU 5221CS
Sugg Max Deflection 2.7 in
Sugg Max Load 4.3 lbf
Wind Direction Left
Wire Diameter 0.036 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 0.27 kg
Length 54.86 mm
Material Spring Steel
Outside Diameter 9.53 mm
Part Type Standard
Rate 0.25 N/mm
SKU 5221CS
Sugg Max Deflection 68.58 mm
Sugg Max Load 19.13 N
Wind Direction Left
Wire Diameter 0.91 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $2.90
50 - 149 $2.76
150 - 299 $2.61
300 - 499 $2.47
500 - 749 $2.18
750 - 999 $1.89
1000+ Call for price