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SS12-91CS - 302/304 Stainless Steel Long Length Extension Springs

The SS12-91CS is a long length extension spring manufactured by Century Spring. It is made from 302/304 stainless steel, ensuring durability and resistance to corrosion. This spring has a wire diameter of 0.091 inches, an outside diameter of 0.75 inches, and a length of 20 inches. With an initial tension of 8 pounds, it can handle a maximum load of 30 pound force. The spring rate is 1.369 inches per pound, providing the necessary elasticity for various applications. The SS12-91CS is a high-quality extension spring suitable for a wide range of projects.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. We understand the importance of timely delivery, and our efficient shipping ensures that you receive your springs promptly. With our significant stock inventory, we can fulfill your order quickly and efficiently, allowing you to continue your projects without delay. As an American company, we are proud to manufacture our springs in the United States, ensuring exceptional quality and supporting local businesses. Trust Century Spring for all your spring needs.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Finish None
Initial Tension
(Approx.)
8 lb
Length 20 in
Material 302/304 Stainless Steel
Max Load
(Suggested)
30 lbf
Measurement Units Standard
Outside Diameter 0.75 in
Rate (Constant) 1.369 lbs
SKU SS12-91CS
Wire Diameter 0.091 in
Specs (in metric)
Label Value
Brand Century Spring
Finish None
Initial Tension
(Approx.)
3.63 kg
Length 508 mm
Material 302/304 Stainless Steel
Max Load
(Suggested)
133.44 N
Measurement Units Standard
Outside Diameter 19.05 mm
Rate (Constant) 0.24 N/mm
SKU SS12-91CS
Wire Diameter 2.31 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours