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109CS - 3 Inch Music Wire Extension Springs

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

The 109CS 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 free length of 3 inches and an initial tension of 0.3 pounds. With an outside diameter of 0.312 inches and a wire diameter of 0.028 inches, it offers a maximum deflection of 7.8 inches and can handle a maximum load of 3.5 pounds force. The spring rate is 0.41 inches per pound, providing reliable performance for various applications. The 109CS is equipped with machine hooks on both ends, ensuring secure attachment. Century Spring's commitment to quality and precision craftsmanship is evident in every spring we produce.

At Century Spring, we understand the importance of timely delivery and a wide range of stock options. We take pride in our fast shipping and significant inventory, ensuring that our customers can receive the springs they need promptly. All our products, including the 109CS, are proudly made in the United States, guaranteeing exceptional quality and supporting local manufacturing. Trust Century Spring for your spring needs, and experience the convenience of our efficient shipping and extensive stock availability.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 0.3 lb
Length 3 in
Material Music Wire
Outside Diameter 0.312 in
Part Type Standard
Rate 0.41 lbs/in
SKU 109CS
Sugg Max Deflection 7.8 in
Sugg Max Load 3.5 lbf
Wind Direction Left
Wire Diameter 0.028 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 0.14 kg
Length 76.2 mm
Material Music Wire
Outside Diameter 7.92 mm
Part Type Standard
Rate 0.07 N/mm
SKU 109CS
Sugg Max Deflection 198.12 mm
Sugg Max Load 15.57 N
Wind Direction Left
Wire Diameter 0.71 mm