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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-561CS - 2.75 Inch 302/304 Stainless Steel Extension Springs

Inventory:           
Estimated Lead Time

The S-561CS is a regular extension spring manufactured by Century Spring. It is made from 302/304 stainless steel and has a machine hook on both ends. This spring has a free length of 2.75 inches and a wire diameter of 0.041 inches. The outside diameter measures 0.312 inches. With a spring rate of 3 lbs/inch, it can provide a maximum deflection of 2 inches and support a maximum load of 7.6 pound force. The S-561CS is a left-wound spring and is suitable for various applications requiring extension and flexibility.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. We understand the importance of timely delivery, and that's why we ensure that our customers receive their springs promptly. Furthermore, all our products, including the S-561CS, are proudly made in the United States. With our commitment to quality and availability, Century Spring is your trusted source for springs.

Download CAD
Unit System
Specs (in standard)
Label Value
A) Brand Century Spring
B) Sku S-561CS
C) Part Type Standard
D) Material 302/304 Stainless Steel
E) Wire Diameter 0.041 in
F) Outside Diameter 0.312 in
G) Length 2.75 in
H) End Type Machine Hook
I) End Position Random
J) Rate 3 lbs/in
K) Initial Tension 1 lb
L) Sugg Max Deflection 2 in
L) Sugg Max Load 7.6 lbf
O) Finish None
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku S-561CS
C) Part Type Standard
D) Material 302/304 Stainless Steel
E) Wire Diameter 1.04 mm
F) Outside Diameter 7.92 mm
G) Length 69.85 mm
H) End Type Machine Hook
I) End Position Random
J) Rate 0.53 N/mm
K) Initial Tension 0.45 kg
L) Sugg Max Deflection 50.8 mm
L) Sugg Max Load 33.8 N
O) Finish None