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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

ZZ1-9CS - 1.38 Inch Spring Steel Extension Springs

Inventory:           
Estimated Lead Time

The ZZ1-9CS is an extension spring manufactured by Century Spring. It features a machine hook on both ends and is made from spring steel. This regular extension spring has a free length of 1.38 inches and an initial tension of 4 pounds. It has an outside diameter of 0.359 inches and a wire diameter of 0.054 inches. With a spring rate of 28 inch-pounds and a maximum deflection of 0.42 inches, the ZZ1-9CS can handle a maximum load of 15 pound-force. This spring is designed for standard measurement units and does not have a finish. Century Spring ensures that this high-quality spring meets your needs.

At Century Spring, we take pride in our fast shipping and significant stock inventory. We understand the importance of receiving your springs promptly, so we strive to process and ship orders quickly. With our vast inventory, including the ZZ1-9CS, you can find the right springs for your applications without delay. Furthermore, all our springs are proudly made in the United States, ensuring exceptional quality and supporting local manufacturing. Trust Century Spring to provide you with reliable shipping, ample supply, and top-notch springs for your projects.

Download CAD
Unit System
Specs (in standard)
Label Value
A) Brand Century Spring
B) Sku ZZ1-9CS
C) Part Type Standard
D) Material Spring Steel
E) Wire Diameter 0.054 in
F) Outside Diameter 0.359 in
G) Length 1.38 in
H) End Type Machine Hook
I) End Position Random
J) Rate 28 lbs/in
K) Initial Tension 4 lb
L) Sugg Max Deflection 0.42 in
L) Sugg Max Load 15 lbf
O) Finish None
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku ZZ1-9CS
C) Part Type Standard
D) Material Spring Steel
E) Wire Diameter 1.37 mm
F) Outside Diameter 9.12 mm
G) Length 35.05 mm
H) End Type Machine Hook
I) End Position Random
J) Rate 4.9 N/mm
K) Initial Tension 1.81 kg
L) Sugg Max Deflection 10.67 mm
L) Sugg Max Load 66.72 N
O) Finish None