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5450CS - 1.25 Inch Music Wire Extension Springs

The 5450CS 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 0.021 Inch and an outside diameter of 0.188 inches. With a free length of 1.25 inches, it offers a maximum deflection of 1.6 Inch and a spring rate of 1.5 inches per pound. The 5450CS has an initial tension of 0.3 Pound and a maximum load capacity of 2.6 Pound Force. It is equipped with machine hooks on both ends, ensuring secure attachment. This standard extension spring is suitable for a wide range of applications.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. Our products, including the 5450CS, are proudly made in the United States. We understand the importance of timely delivery and strive to ensure that our customers receive their springs promptly. With our vast selection and reliable shipping, Century Spring is your go-to source for all your spring needs.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 0.3 lb
Length 1.25 in
Material Music Wire
Outside Diameter 0.188 in
Part Type Standard
Rate 1.5 lbs/in
SKU 5450CS
Sugg Max Deflection 1.6 in
Sugg Max Load 2.6 lbf
Wind Direction Left
Wire Diameter 0.021 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 0.14 kg
Length 31.75 mm
Material Music Wire
Outside Diameter 4.78 mm
Part Type Standard
Rate 0.26 N/mm
SKU 5450CS
Sugg Max Deflection 40.64 mm
Sugg Max Load 11.56 N
Wind Direction Left
Wire Diameter 0.53 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $1.94
50 - 149 $1.85
150 - 299 $1.75
300 - 499 $1.65
500 - 749 $1.46
750 - 999 $1.27
1000+ Call for price