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12347CS - 8.50 Inch Spring Steel Extension Springs

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

The 12347CS is a regular extension spring manufactured by Century Spring. It features a zinc finish for added durability and is made from high-quality spring steel. This spring has a free length of 8.5 inches and an initial tension of 4 pounds. With a maximum deflection of 11 inches, it can handle a maximum load of 25 pounds. The 1-inch outside diameter and 0.094-inch wire diameter make it suitable for a range of applications. The 12347CS has a spring rate of 1.9 inch-pounds, providing reliable performance.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. When you order the 12347CS, you can expect prompt delivery to meet your project timelines. What's more, all our springs are proudly made in the United States, ensuring high-quality craftsmanship and supporting local manufacturing. With Century Spring, you can count on receiving top-notch springs for your needs efficiently and conveniently.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 4 lb
Length 8.5 in
Material Spring Steel
Outside Diameter 1 in
Part Type Standard
Rate 1.9 lbs/in
SKU 12347CS
Sugg Max Deflection 11 in
Sugg Max Load 25 lbf
Wind Direction Left
Wire Diameter 0.094 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 1.81 kg
Length 215.9 mm
Material Spring Steel
Outside Diameter 25.4 mm
Part Type Standard
Rate 0.33 N/mm
SKU 12347CS
Sugg Max Deflection 279.4 mm
Sugg Max Load 111.2 N
Wind Direction Left
Wire Diameter 2.39 mm