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5663CS - 3.81 Inch Spring Steel Extension Springs

The 5663CS is a regular extension spring manufactured by Century Spring. It is made from spring steel and has a zinc finish. This spring has a wire diameter of 0.105 inches, an outside diameter of 0.843 inches, and a free length of 3.81 inches. It has an initial tension of 9 Pound and a maximum load of 43 Pound Force. The 5663CS features machine hook ends and a left wind direction. It is a standard extension spring suitable for a wide range of applications.

At Century Spring, we pride ourselves on our fast shipping and extensive stock inventory. We understand that time is valuable, which is why we strive to get our products to you as quickly as possible. With our significant stock of springs, including the 5663CS, you can be confident that we have the right products in the quantities you need. Plus, our springs are proudly made in the United States, ensuring high-quality craftsmanship and supporting local manufacturing. Trust Century Spring for all your spring needs.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 9 lb
Length 3.81 in
Material Spring Steel
Outside Diameter 0.843 in
Part Type Standard
Rate 18 lbs/in
SKU 5663CS
Sugg Max Deflection 2 in
Sugg Max Load 43 lbf
Wind Direction Left
Wire Diameter 0.105 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 4.08 kg
Length 96.77 mm
Material Spring Steel
Outside Diameter 21.41 mm
Part Type Standard
Rate 3.15 N/mm
SKU 5663CS
Sugg Max Deflection 50.8 mm
Sugg Max Load 191.26 N
Wind Direction Left
Wire Diameter 2.67 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $5.49
50 - 149 $5.22
150 - 299 $4.95
300 - 499 $4.67
500 - 749 $4.12
750 - 999 $3.57
1000+ Call for price