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5615CS - 8.50 Inch Spring Steel Extension Springs

The 5615CS is a regular extension spring manufactured by Century Spring. It features machine hook ends and has a zinc finish. This spring measures 8.5 inches in free length and has an initial tension of 10 pounds. Made from spring steel, it can withstand a maximum deflection of 8.8 inches and has a maximum load capacity of 62 pounds. With an outside diameter of 1.687 inches and a wire diameter of 0.156 inches, the 5615CS has a spring rate of 6 inch-pounds. This standard extension spring is suitable for a variety of applications.

At Century Spring, we take pride in our fast shipping and extensive inventory. We understand the importance of receiving your springs promptly, which is why we offer efficient shipping services. Additionally, our substantial stock ensures that you can find the springs you need without delay. As a company based in the United States, we are committed to producing high-quality springs right here in our own country. With Century Spring, you can rely on our fast shipping, ample supply, and American-made products to meet your spring needs.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 10 lb
Length 8.5 in
Material Spring Steel
Outside Diameter 1.687 in
Part Type Standard
Rate 6 lbs/in
SKU 5615CS
Sugg Max Deflection 8.8 in
Sugg Max Load 62 lbf
Wind Direction Left
Wire Diameter 0.156 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 4.54 kg
Length 215.9 mm
Material Spring Steel
Outside Diameter 42.85 mm
Part Type Standard
Rate 1.05 N/mm
SKU 5615CS
Sugg Max Deflection 223.52 mm
Sugg Max Load 275.78 N
Wind Direction Left
Wire Diameter 3.96 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $22.58
50 - 149 $21.46
150 - 299 $20.33
300 - 499 $19.20
500 - 749 $16.94
750 - 999 $14.68
1000+ Call for price