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315CS - 5 Inch Music Wire Extension Springs

The 315CS 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 0.035 inches and an outer diameter of 0.312 inches. With a free length of 5 inches and an initial tension of 0.8 pounds, it offers reliable performance in various applications. The 315CS has a maximum deflection of 7.4 inches and a maximum load capacity of 6.6 pounds force. It is designed with machine hooks on both ends, allowing for easy installation and secure attachment. With Century Spring's commitment to quality and precision, the 315CS is a dependable choice for your extension spring needs.

At Century Spring, we understand the importance of fast shipping and maintaining a substantial stock inventory. We take pride in offering prompt delivery of our products, including the 315CS, to ensure that our customers can complete their projects without delays. Additionally, all our springs are proudly made in the United States, showcasing our dedication to supporting the domestic manufacturing industry. With our reliable shipping and ample supply, Century Spring is your trusted partner for all your spring requirements.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 0.8 lb
Length 5 in
Material Music Wire
Outside Diameter 0.312 in
Part Type Standard
Rate 0.79 lbs/in
SKU 315CS
Sugg Max Deflection 7.4 in
Sugg Max Load 6.6 lbf
Wind Direction Left
Wire Diameter 0.035 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 0.36 kg
Length 127 mm
Material Music Wire
Outside Diameter 7.92 mm
Part Type Standard
Rate 0.14 N/mm
SKU 315CS
Sugg Max Deflection 187.96 mm
Sugg Max Load 29.36 N
Wind Direction Left
Wire Diameter 0.89 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $4.09
50 - 149 $3.89
150 - 299 $3.69
300 - 499 $3.48
500 - 749 $3.07
750 - 999 $2.66
1000+ Call for price