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439CS - 1.09 Inch Music Wire Extension Springs

The 439CS 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 0.02 Inch and an outside diameter of 0.234 inches. With a free length of 1.09 Inch and a maximum deflection of 2.5 inches, the 439CS provides flexibility and strength. It has an initial tension of 0.1 Pound, a maximum load of 1.8 Pound Force, and a spring rate of 0.67 inches per pound. The ends of this extension spring are machine hooks, allowing for secure attachment. The 439CS is a reliable and versatile option 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 prioritize efficient shipping methods. Additionally, our significant stock inventory ensures that we have an ample supply of springs, including the 439CS, ready to meet your needs. As an American company, we are committed to manufacturing our products in the United States. This dedication to quality and craftsmanship guarantees that our customers receive top-notch springs for their projects. Trust Century Spring for your spring needs, and experience our reliable shipping and high-quality inventory firsthand.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 0.1 lb
Length 1.09 in
Material Music Wire
Outside Diameter 0.234 in
Part Type Standard
Rate 0.67 lbs/in
SKU 439CS
Sugg Max Deflection 2.5 in
Sugg Max Load 1.8 lbf
Wind Direction Left
Wire Diameter 0.02 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 0.05 kg
Length 27.69 mm
Material Music Wire
Outside Diameter 5.94 mm
Part Type Standard
Rate 0.12 N/mm
SKU 439CS
Sugg Max Deflection 63.5 mm
Sugg Max Load 8.01 N
Wind Direction Left
Wire Diameter 0.51 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $2.09
50 - 149 $1.99
150 - 299 $1.89
300 - 499 $1.78
500 - 749 $1.57
750 - 999 $1.36
1000+ Call for price