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5818CS - 7.13 Inch Music Wire Extension Springs

The 5818CS is a regular extension spring manufactured by Century Spring. It is made from high-quality music wire and features a durable zinc finish. This spring has a wire diameter of 0.058 Inch and an outside diameter of 0.25 inches. Its free length measures at 7.13 inches, providing ample extension capabilities. With an initial tension of 12 pounds, the 5818CS offers reliable performance. It has a maximum deflection of 1.4 inches and a maximum load capacity of 39 pound force. The 5818CS is a left-wound spring with machine hook ends. As a trusted extension spring, it is suitable for a wide range of applications.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. We understand the importance of prompt delivery, which is why we strive to ship our products quickly. With our significant stock levels, including the 5818CS, customers can rely on us to have the springs they need readily available. Additionally, all our springs are proudly made in the United States, ensuring the highest quality and supporting local manufacturing. Trust Century Spring for your spring needs, and experience our efficient shipping and commitment to American-made excellence.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 12 lb
Length 7.13 in
Material Music Wire
Outside Diameter 0.25 in
Part Type Standard
Rate 20 lbs/in
SKU 5818CS
Sugg Max Deflection 1.4 in
Sugg Max Load 39 lbf
Wind Direction Left
Wire Diameter 0.058 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 5.44 kg
Length 181.1 mm
Material Music Wire
Outside Diameter 6.35 mm
Part Type Standard
Rate 3.5 N/mm
SKU 5818CS
Sugg Max Deflection 35.56 mm
Sugg Max Load 173.47 N
Wind Direction Left
Wire Diameter 1.47 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $4.89
50 - 149 $4.65
150 - 299 $4.41
300 - 499 $4.16
500 - 749 $3.67
750 - 999 $3.18
1000+ Call for price