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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-637CS - 3 Inch 302/304 Stainless Steel Extension Springs

Inventory:           
Estimated Lead Time

The S-637CS 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 3 inches and an outside diameter of 0.656 inches. It has an initial tension of 2 pounds and a maximum deflection of 3.3 inches. The spring rate is 2.9 lbs/inch and it can handle a maximum load of 11 pound force. The wire diameter is 0.0625 inches. The S-637CS is a reliable extension spring suitable for a variety of applications.

At Century Spring, we understand the importance of fast shipping and maintaining a significant stock inventory. We take pride in manufacturing our springs in the United States. With our efficient shipping process and ample supply, we ensure that customers can quickly receive the springs they need for their projects. Trust Century Spring for high-quality springs and excellent customer service.

Download CAD
Unit System
Specs (in standard)
Label Value
A) Brand Century Spring
B) Sku S-637CS
C) Part Type Standard
D) Material 302/304 Stainless Steel
E) Wire Diameter 0.0625 in
F) Outside Diameter 0.656 in
G) Length 3 in
H) End Type Machine Hook
I) End Position Random
J) Rate 2.9 lbs/in
K) Initial Tension 2 lb
L) Sugg Max Deflection 3.3 in
L) Sugg Max Load 11 lbf
O) Finish None
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku S-637CS
C) Part Type Standard
D) Material 302/304 Stainless Steel
E) Wire Diameter 1.59 mm
F) Outside Diameter 16.66 mm
G) Length 76.2 mm
H) End Type Machine Hook
I) End Position Random
J) Rate 0.51 N/mm
K) Initial Tension 0.91 kg
L) Sugg Max Deflection 83.82 mm
L) Sugg Max Load 48.93 N
O) Finish None