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81030CS - 3.50 Inch Music Wire Extension Springs

Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours

The 81030CS is a regular extension spring manufactured by Century Spring. It is made from high-quality music wire and has a pristine finish. This spring has a wire diameter of 0.135 inch and an outer diameter of 1 inches. With a free length of 3.5 inches and a maximum deflection of 1.4 inches, it provides the perfect balance of flexibility and strength. The 81030CS has an initial tension of 8 pounds and a spring rate of 57 inch-pounds. It can handle a maximum load of 89 pound force, making it suitable for a wide range of applications. The ends of this spring feature full loops for secure attachment.

At Century Spring, we take pride in our fast shipping and extensive inventory. We understand the importance of timely delivery, and our efficient shipping process ensures that you receive your springs promptly. Additionally, we maintain a significant stock of springs, including the 81030CS, so you can find the right product for your needs. We are committed to manufacturing our springs in the United States, ensuring the highest quality and supporting local businesses. Trust Century Spring for reliable shipping, ample stock, and top-notch American-made springs.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Full Loop
Finish None
Initial Tension 8 lb
Length 3.5 in
Material Music Wire
Outside Diameter 1 in
Part Type Standard
Rate 57 lbs/in
SKU 81030CS
Sugg Max Deflection 1.4 in
Sugg Max Load 89 lbf
Wind Direction Left
Wire Diameter 0.135 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Full Loop
Finish None
Initial Tension 3.63 kg
Length 88.9 mm
Material Music Wire
Outside Diameter 25.4 mm
Part Type Standard
Rate 9.98 N/mm
SKU 81030CS
Sugg Max Deflection 35.56 mm
Sugg Max Load 395.87 N
Wind Direction Left
Wire Diameter 3.43 mm