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373CS - 9 Inch High Carbon Steel Extension Springs

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

The 373CS is a regular extension spring manufactured by Century Spring. It features a High Carbon steel construction with a zinc finish for durability. This spring has a free length of 9 inches and an initial tension of 4 pounds. With a maximum deflection of 12 inches and a maximum load of 31 pound force, it is suitable for a variety of applications. The 373CS has an outside diameter of 1.156 inches and a wire diameter of 0.105 inches. Its spring rate is 2.2 inches per pound, making it a reliable choice for your extension spring needs.

At Century Spring, we pride ourselves on our fast shipping and extensive stock inventory. We understand that time is of the essence in your projects, which is why we strive to deliver your springs promptly. Additionally, all our springs, including the 373CS, are proudly made in the United States. This ensures that you receive high-quality products that meet your specifications. With Century Spring, you can trust that we have the springs you need, when you need them.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 4 lb
Length 9 in
Material High Carbon Steel
Outside Diameter 1.156 in
Part Type Standard
Rate 2.2 lbs/in
SKU 373CS
Sugg Max Deflection 12 in
Sugg Max Load 31 lbf
Wind Direction Left
Wire Diameter 0.105 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 1.81 kg
Length 228.6 mm
Material High Carbon Steel
Outside Diameter 29.36 mm
Part Type Standard
Rate 0.39 N/mm
SKU 373CS
Sugg Max Deflection 304.8 mm
Sugg Max Load 137.89 N
Wind Direction Left
Wire Diameter 2.67 mm