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308CS - 3.25 Inch Music Wire Extension Springs

The 308CS is a regular extension spring manufactured by Century Spring. It is made from Music Wire and has a zinc finish. This spring has a wire diameter of 0.025 inches, an outside diameter of 0.219 inches, and a free length of 3.25 inches. It has an initial tension of 0.4 Pound and a maximum deflection of 4.9 inches. The 308CS has a maximum load of 3.6 Pound Force and features full loop ends. It is a standard extension spring suitable for a variety of applications.

At Century Spring, we pride ourselves on our fast shipping and extensive inventory. We have a large stock of springs, including the 308CS, ready to be shipped to our customers in a timely manner. All of our products are proudly made in the United States, ensuring high-quality craftsmanship. With our efficient shipping and ample supply, Century Spring is committed to providing customers with the springs they need for their projects quickly and efficiently.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Full Loop
Finish Zinc
Initial Tension 0.4 lb
Length 3.25 in
Material Music Wire
Outside Diameter 0.219 in
Part Type Standard
Rate 0.65 lbs/in
SKU 308CS
Sugg Max Deflection 4.9 in
Sugg Max Load 3.6 lbf
Wind Direction Left
Wire Diameter 0.025 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Full Loop
Finish Zinc
Initial Tension 0.18 kg
Length 82.55 mm
Material Music Wire
Outside Diameter 5.56 mm
Part Type Standard
Rate 0.11 N/mm
SKU 308CS
Sugg Max Deflection 124.46 mm
Sugg Max Load 16.01 N
Wind Direction Left
Wire Diameter 0.64 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $3.55
50 - 149 $3.38
150 - 299 $3.20
300 - 499 $3.02
500 - 749 $2.67
750 - 999 $2.31
1000+ Call for price