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100 YRS

The Countdown to 100 Years of Century Spring!

Since 1927, Century Spring Corp has been the original industry-leading spring manufacturer for both stock and custom springs. Read about 100 Years of Century Spring here.

167 DAYS

S-518CS - 1 Inch 302/304 Stainless Steel Extension Springs

Inventory:           
Estimated Lead Time

The S-518CS is a regular extension spring manufactured by Century Spring. It features machine hook ends and is made of 302/304 stainless steel. This spring has a free length of 1 inch and an initial tension of 0.6 pounds. Its maximum deflection is 0.58 inches, and it can handle a maximum load of 3.4 pound force. The S-518CS has an outside diameter of 0.188 inch and a wire diameter of 0.026 inches. Its spring rate is 4.7 lbs/inch. With its left wind direction, this spring is suitable for various extension applications.

At Century Spring, we pride ourselves on our fast shipping and extensive stock inventory. We understand the importance of timely delivery, which is why we strive to promptly ship our products, including the S-518CS. Additionally, all our springs are proudly made in the United States. With our commitment to quality and efficiency, Century Spring ensures that customers can rely on us to provide the springs they need for their projects.

Download CAD
Unit System
Specs (in standard)
Label Value
A) Brand Century Spring
B) Sku S-518CS
C) Part Type Standard
D) Material 302/304 Stainless Steel
E) Wire Diameter 0.026 in
F) Outside Diameter 0.188 in
G) Length 1 in
H) End Type Machine Hook
I) End Position Random
J) Rate 4.7 lbs/in
K) Initial Tension 0.6 lb
L) Sugg Max Deflection 0.58 in
L) Sugg Max Load 3.4 lbf
O) Finish None
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku S-518CS
C) Part Type Standard
D) Material 302/304 Stainless Steel
E) Wire Diameter 0.66 mm
F) Outside Diameter 4.78 mm
G) Length 25.4 mm
H) End Type Machine Hook
I) End Position Random
J) Rate 0.82 N/mm
K) Initial Tension 0.27 kg
L) Sugg Max Deflection 14.73 mm
L) Sugg Max Load 15.12 N
O) Finish None