This browser is no longer supported. Upgrade to Microsoft Edge or switch to a supported browser, like Chrome, Safari, or Firefox, to explore the MW Components website.

We're sorry for the inconvenience.

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

F-81CS - 1 Inch High Carbon Steel Extension Springs

Inventory:           
Estimated Lead Time

The F-81CS is a regular extension spring manufactured by Century Spring. It is made from High Carbon steel and has a gold iridite finish. This spring has a wire diameter of 0.032 inches, an outside diameter of 0.25 inches, and a free length of 1 inches. It has an initial tension of 0.9 Pound and a maximum deflection of 0.55 inches. The F-81CS has a spring rate of 7.5 lbs/inch and a maximum load of 5 Pound Force. It features machine hook ends and is suitable for various applications.

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 of our products, including the F-81CS, are proudly made in the United States. With our commitment to quality and availability, you can rely on 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 F-81CS
C) Part Type Standard
D) Material High Carbon Steel
E) Wire Diameter 0.032 in
F) Outside Diameter 0.25 in
G) Length 1 in
H) End Type Machine Hook
I) End Position Random
J) Rate 7.5 lbs/in
K) Initial Tension 0.9 lb
L) Sugg Max Deflection 0.55 in
L) Sugg Max Load 5 lbf
O) Finish Gold Iridite
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku F-81CS
C) Part Type Standard
D) Material High Carbon Steel
E) Wire Diameter 0.81 mm
F) Outside Diameter 6.35 mm
G) Length 25.4 mm
H) End Type Machine Hook
I) End Position Random
J) Rate 1.31 N/mm
K) Initial Tension 0.41 kg
L) Sugg Max Deflection 13.97 mm
L) Sugg Max Load 22.24 N
O) Finish Gold Iridite