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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-651CS - 1.25 Inch 302/304 Stainless Steel Extension Springs

Inventory:           
Estimated Lead Time

The S-651CS is a regular extension spring manufactured by Century Spring. It is made from 302/304 Stainless Steel and has a wire diameter of 0.035 inches. This spring has a free length of 1.25 Inch and an outside diameter of 0.312 inches. It has an initial tension of 0.7 Pound and a maximum deflection of 0.8 inches. The S-651CS has a spring rate of 4.8 lbs/inch and a maximum load of 4.6 Pound Force. It features full loop ends, making it easy to install and secure. As a regular extension spring, it is suitable for a variety of applications.

At Century Spring, we pride ourselves on fast shipping and maintaining a significant stock inventory. Our springs, including the S-651CS, are proudly made in the United States. With our reliable shipping and ample supply, we ensure that our customers can quickly receive the springs they need for their projects.

Download CAD
Unit System
Specs (in standard)
Label Value
A) Brand Century Spring
B) Sku S-651CS
C) Part Type Standard
D) Material 302/304 Stainless Steel
E) Wire Diameter 0.035 in
F) Outside Diameter 0.312 in
G) Length 1.25 in
H) End Type Full Loop
I) End Position Random
J) Rate 4.8 lbs/in
K) Initial Tension 0.7 lb
L) Sugg Max Deflection 0.8 in
L) Sugg Max Load 4.6 lbf
O) Finish None
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku S-651CS
C) Part Type Standard
D) Material 302/304 Stainless Steel
E) Wire Diameter 0.89 mm
F) Outside Diameter 7.92 mm
G) Length 31.75 mm
H) End Type Full Loop
I) End Position Random
J) Rate 0.84 N/mm
K) Initial Tension 0.32 kg
L) Sugg Max Deflection 20.32 mm
L) Sugg Max Load 20.46 N
O) Finish None