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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

ZZ4-45CS - 1.75 Inch Music Wire Extension Springs

Inventory:           
Estimated Lead Time

The ZZ4-45CS is a regular extension spring manufactured by Century Spring. It is made from high-quality music wire and has a durable zinc finish. This spring has a wire diameter of 0.02 inches, an outer diameter of 0.125 inches, and a free length of 1.75 inches. It has an initial tension of 0.6 pound and a maximum deflection of 1.1 inches. With a maximum load capacity of 3.5 pound force, this spring is suitable for a variety of applications. The ZZ4-45CS features machine hook ends and a left wind direction, providing secure attachment and reliable performance.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. We understand the importance of timely delivery for your projects, which is why we strive to process and ship orders quickly. Additionally, all our products, including the ZZ4-45CS, are proudly made in the United States. We prioritize quality and craftsmanship in our manufacturing processes to ensure that our customers receive reliable and durable springs for their applications. With Century Spring, you can trust that your spring needs will be met efficiently and with top-notch products.

Download CAD
Unit System
Specs (in standard)
Label Value
A) Brand Century Spring
B) Sku ZZ4-45CS
C) Part Type Standard
D) Material Music Wire
E) Wire Diameter 0.02 in
F) Outside Diameter 0.125 in
G) Length 1.75 in
H) End Type Machine Hook
I) End Position Random
J) Rate 2.6 lbs/in
K) Initial Tension 0.6 lb
L) Sugg Max Deflection 1.1 in
L) Sugg Max Load 3.5 lbf
O) Finish Zinc
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku ZZ4-45CS
C) Part Type Standard
D) Material Music Wire
E) Wire Diameter 0.51 mm
F) Outside Diameter 3.18 mm
G) Length 44.45 mm
H) End Type Machine Hook
I) End Position Random
J) Rate 0.46 N/mm
K) Initial Tension 0.27 kg
L) Sugg Max Deflection 27.94 mm
L) Sugg Max Load 15.57 N
O) Finish Zinc