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

ZZ1-66CS - 0.50 Inch Spring Steel Extension Springs

Inventory:           
Estimated Lead Time

The ZZ1-66CS 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 0.037 inches, an outer diameter of 0.266 inches, and a free length of 0.5 inches. It has an initial tension of 1 Pound and a maximum deflection of 0.16 inches. The ZZ1-66CS has a spring rate of 35 lbs/inch and can withstand a maximum load of 7 Pound Force. It features machine hooks at both ends, providing secure attachment. This regular extension spring is suitable for various applications.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. We understand the importance of quick turnaround times for our customers. With our significant supply of springs, including the ZZ1-66CS, we ensure that you can easily find and receive the springs you need for your projects. What's more, all our products are proudly made in the United States, ensuring high-quality craftsmanship and supporting local manufacturing. Trust Century Spring for all your spring needs.

Download CAD
Unit System
Specs (in standard)
Label Value
A) Brand Century Spring
B) Sku ZZ1-66CS
C) Part Type Standard
D) Material Spring Steel
E) Wire Diameter 0.037 in
F) Outside Diameter 0.266 in
G) Length 0.5 in
H) End Type Machine Hook
I) End Position Random
J) Rate 35 lbs/in
K) Initial Tension 1 lb
L) Sugg Max Deflection 0.16 in
L) Sugg Max Load 7 lbf
O) Finish Zinc
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku ZZ1-66CS
C) Part Type Standard
D) Material Spring Steel
E) Wire Diameter 0.94 mm
F) Outside Diameter 6.76 mm
G) Length 12.7 mm
H) End Type Machine Hook
I) End Position Random
J) Rate 6.13 N/mm
K) Initial Tension 0.45 kg
L) Sugg Max Deflection 4.06 mm
L) Sugg Max Load 31.14 N
O) Finish Zinc