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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-641CS - 6.75 Inch 302/304 Stainless Steel Extension Springs

Inventory:           
Estimated Lead Time

The S-641CS is a regular extension spring manufactured by Century Spring. It is made from 302/304 stainless steel and has a natural finish. This spring has a wire diameter of 0.12 inches, an outside diameter of 1.421 inches, and a free length of 6.75 inches. It has an initial tension of 5 pounds and a maximum deflection of 9.7 inches. The S-641CS has a spring rate of 2.9 lbs/inch and a maximum load capacity of 33 pounds force. It features machine hooks at both ends for secure attachment. This regular extension spring is suitable for a variety of applications.

At Century Spring, we pride ourselves on our fast shipping and extensive stock inventory. We understand the importance of timely delivery, and we ensure that our customers receive their springs quickly and efficiently. Additionally, all of our products, including the S-641CS, 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-641CS
C) Part Type Standard
D) Material 302/304 Stainless Steel
E) Wire Diameter 0.12 in
F) Outside Diameter 1.421 in
G) Length 6.75 in
H) End Type Machine Hook
I) End Position Random
J) Rate 2.9 lbs/in
K) Initial Tension 5 lb
L) Sugg Max Deflection 9.7 in
L) Sugg Max Load 33 lbf
O) Finish None
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku S-641CS
C) Part Type Standard
D) Material 302/304 Stainless Steel
E) Wire Diameter 3.05 mm
F) Outside Diameter 36.09 mm
G) Length 171.45 mm
H) End Type Machine Hook
I) End Position Random
J) Rate 0.51 N/mm
K) Initial Tension 2.27 kg
L) Sugg Max Deflection 246.38 mm
L) Sugg Max Load 146.78 N
O) Finish None