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138CS - 8.50 Inch High Carbon Steel Extension Springs

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

The 138CS is a regular extension spring manufactured by Century Spring. It is made from High Carbon steel and features a zinc finish. This spring has a wire diameter of 0.08 inches, an outside diameter of 0.875 inches, and a free length of 8.5 inches. It has an initial tension of 3 pounds and a maximum deflection of 12 inches. The 138CS has a spring rate of 1.3 inches per pound and a maximum load of 18 pound force. It has machine hooks on both ends for easy installation. This regular extension spring is suitable for various applications.

At Century Spring, we pride ourselves on our fast shipping and extensive stock inventory. We understand the importance of timely delivery and ensuring that our customers have access to the springs they need. As a proud United States manufacturer, we are committed to producing high-quality products like the 138CS. With our efficient shipping processes and ample supply, Century Spring is the go-to choice 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 3 lb
Length 8.5 in
Material High Carbon Steel
Outside Diameter 0.875 in
Part Type Standard
Rate 1.3 lbs/in
SKU 138CS
Sugg Max Deflection 12 in
Sugg Max Load 18 lbf
Wind Direction Left
Wire Diameter 0.08 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 1.36 kg
Length 215.9 mm
Material High Carbon Steel
Outside Diameter 22.23 mm
Part Type Standard
Rate 0.23 N/mm
SKU 138CS
Sugg Max Deflection 304.8 mm
Sugg Max Load 80.06 N
Wind Direction Left
Wire Diameter 2.03 mm