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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

B18-137CS - 1.16 Inch Spring Steel Extension Springs

Inventory:           
Estimated Lead Time

The B18-137CS is a regular extension spring manufactured by Century Spring. It is made from spring steel and has a zinc finish. This spring has a wire diameter of 0.04 inches, an outside diameter of 0.406 inches, and a free length of 1.16 inches. It has an initial tension of 0.8 pound and a maximum deflection of 1.1 inches. The B18-137CS has a spring rate of 4.2 lbs/inch and a maximum load of 5.5 pound force. It features machine hooks on both ends. This extension spring is ideal for various applications that require controlled extension and reliable performance.

At Century Spring, we pride ourselves on our fast shipping and extensive stock inventory. We understand the importance of timely delivery and strive to ensure that our customers receive their springs promptly. Additionally, all our products, including the B18-137CS, are proudly made in the United States. With our commitment to quality and efficiency, you can trust Century Spring to provide the springs you need for your projects.

Download CAD
Unit System
Specs (in standard)
Label Value
A) Brand Century Spring
B) Sku B18-137CS
C) Part Type Standard
D) Material Spring Steel
E) Wire Diameter 0.04 in
F) Outside Diameter 0.406 in
G) Length 1.16 in
H) End Type Machine Hook
I) End Position Random
J) Rate 4.2 lbs/in
K) Initial Tension 0.8 lb
L) Sugg Max Deflection 1.1 in
L) Sugg Max Load 5.5 lbf
O) Finish Zinc
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku B18-137CS
C) Part Type Standard
D) Material Spring Steel
E) Wire Diameter 1.02 mm
F) Outside Diameter 10.31 mm
G) Length 29.46 mm
H) End Type Machine Hook
I) End Position Random
J) Rate 0.74 N/mm
K) Initial Tension 0.36 kg
L) Sugg Max Deflection 27.94 mm
L) Sugg Max Load 24.46 N
O) Finish Zinc