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

ZZ4-46CS - 1 Inch Music Wire Extension Springs

Inventory:           
Estimated Lead Time

The ZZ4-46CS is a regular extension spring manufactured by Century Spring. It is made from high-quality music wire and features a durable zinc finish. This spring has a wire diameter of 0.018 inch and an outer diameter of 0.125 inches. With a free length of 1 inch and an initial tension of 0.4 pound, it provides reliable performance and flexibility. The ZZ4-46CS has a maximum deflection of 0.75 inch and a maximum load capacity of 2.5 pound force. Its left wind direction and full loop ends make it easy to install and secure. This standard extension spring is ideal for a wide range of applications.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. We understand the urgency of your projects, which is why we ensure prompt delivery of our products, including the ZZ4-46CS. With our significant stock, you can trust that we have the springs you need readily available. What sets us apart is our commitment to manufacturing our springs in the United States, guaranteeing exceptional quality and supporting local businesses. Choose Century Spring for reliable shipping, ample supply, and high-quality American-made springs.

Download CAD
Unit System
Specs (in standard)
Label Value
A) Brand Century Spring
B) Sku ZZ4-46CS
C) Part Type Standard
D) Material Music Wire
E) Wire Diameter 0.018 in
F) Outside Diameter 0.125 in
G) Length 1 in
H) End Type Full Loop
I) End Position Random
J) Rate 2.9 lbs/in
K) Initial Tension 0.4 lb
L) Sugg Max Deflection 0.75 in
L) Sugg Max Load 2.5 lbf
O) Finish Zinc
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku ZZ4-46CS
C) Part Type Standard
D) Material Music Wire
E) Wire Diameter 0.46 mm
F) Outside Diameter 3.18 mm
G) Length 25.4 mm
H) End Type Full Loop
I) End Position Random
J) Rate 0.51 N/mm
K) Initial Tension 0.18 kg
L) Sugg Max Deflection 19.05 mm
L) Sugg Max Load 11.12 N
O) Finish Zinc