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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

ZZ4-30CS - 1.97 Inch Music Wire Extension Springs

Inventory:           
Estimated Lead Time

The ZZ4-30CS is a regular extension spring manufactured by Century Spring. It features a machine hook at both ends and has a zinc finish for added durability. This spring has a free length of 1.97 inches and an initial tension of 0.3 pounds. Made from high-quality music wire, it can withstand a maximum deflection of 2.7 inches and support a maximum load of 3 pound force. With an outside diameter of 0.188 inches and a wire diameter of 0.022 inches, the ZZ4-30CS has a spring rate of 0.99 lbs/inch. Its shipping weight is 0.0045 pound, making it lightweight and easy to handle. This extension spring is suitable for various applications and meets industry standards.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. We understand the importance of timely delivery, which is why we ensure that our products, including the ZZ4-30CS, are readily available. As a US-based manufacturer, we prioritize quality and craftsmanship. Our commitment to excellence is reflected in every spring we produce. With Century Spring, you can count on receiving top-notch products made in the United States, backed by our efficient shipping and abundant supply.

Download CAD
Unit System
Specs (in standard)
Label Value
A) Brand Century Spring
B) Sku ZZ4-30CS
C) Part Type Standard
D) Material Music Wire
E) Wire Diameter 0.022 in
F) Outside Diameter 0.188 in
G) Length 1.97 in
H) End Type Machine Hook
I) End Position Random
J) Rate 0.99 lbs/in
K) Initial Tension 0.3 lb
L) Sugg Max Deflection 2.7 in
L) Sugg Max Load 3 lbf
O) Finish Zinc
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku ZZ4-30CS
C) Part Type Standard
D) Material Music Wire
E) Wire Diameter 0.56 mm
F) Outside Diameter 4.78 mm
G) Length 50.04 mm
H) End Type Machine Hook
I) End Position Random
J) Rate 0.17 N/mm
K) Initial Tension 0.14 kg
L) Sugg Max Deflection 68.58 mm
L) Sugg Max Load 13.34 N
O) Finish Zinc