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731CS - 12 Inch High Carbon Steel Extension Springs

The 731CS is a regular extension spring manufactured by Century Spring. It is made from High Carbon steel and has a zinc finish. This spring has a wire diameter of 0.105 inches, an outer diameter of 1 inches, and a free length of 12 inches. It has an initial tension of 6 pounds and a maximum deflection of 12 inches. The 731CS has a spring rate of 2.4 inches per pound and a maximum load of 35 pound force. It has machine hook ends, and the wind direction is left. This standard extension spring is suitable for various applications.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. We understand the importance of timely delivery, which is why we strive to quickly ship out orders, including the 731CS. We also ensure that our customers have access to a wide range of springs, including regular extension springs like the 731CS, thanks to our significant stock inventory. Additionally, all our springs are proudly made in the United States, guaranteeing quality and supporting local manufacturing. Trust Century Spring for reliable shipping, ample supply, and high-quality American-made springs for your projects.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 6 lb
Length 12 in
Material High Carbon Steel
Outside Diameter 1 in
Part Type Standard
Rate 2.4 lbs/in
SKU 731CS
Sugg Max Deflection 12 in
Sugg Max Load 35 lbf
Wind Direction Left
Wire Diameter 0.105 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 2.72 kg
Length 304.8 mm
Material High Carbon Steel
Outside Diameter 25.4 mm
Part Type Standard
Rate 0.42 N/mm
SKU 731CS
Sugg Max Deflection 304.8 mm
Sugg Max Load 155.68 N
Wind Direction Left
Wire Diameter 2.67 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $13.37
50 - 149 $12.71
150 - 299 $12.04
300 - 499 $11.37
500 - 749 $10.03
750 - 999 $8.70
1000+ Call for price