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S-621CS - 3.22 Inch 302/304 Stainless Steel Extension Springs

Inventory Status
Estimated Lead Time

The S-621CS is a regular extension spring manufactured by Century Spring. It is made from 302/304 stainless steel and does not have a finish. This spring has a wire diameter of 0.055 inches, an outside diameter of 0.375 inches, and a free length of 3.22 inches. It has an initial tension of 3 pounds and a maximum deflection of 1.6 inches. The S-621CS has a rate of 7 inch-pounds and can handle a maximum load of 15 pounds. It features machine hook ends and a left wind direction. This extension spring is suitable for various applications.

Century Spring prides itself on fast shipping and a significant stock inventory. We understand the importance of timely delivery for our customers, which is why we strive to process and ship orders quickly. Additionally, our extensive stock ensures that we have the springs you need readily available. We are proud to manufacture our products in the United States, ensuring quality and supporting local industries. Trust Century Spring for efficient shipping, ample supply, and dependable springs for your projects.

Download CAD
Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 3.7 lb
Length 3.22 in
Material 302/304 Stainless Steel
Outside Diameter 0.375 in
Part Type Standard
Rate 7 lbs/in
SKU S-621CS
Sugg Max Deflection 1.6 in
Sugg Max Load 15 lbf
Wind Direction Left
Wire Diameter 0.055 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 1.68 kg
Length 81.79 mm
Material 302/304 Stainless Steel
Outside Diameter 9.53 mm
Part Type Standard
Rate 1.23 N/mm
SKU S-621CS
Sugg Max Deflection 40.64 mm
Sugg Max Load 66.72 N
Wind Direction Left
Wire Diameter 1.4 mm