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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

ZZ4-38CS - 0.50 Inch Music Wire Extension Springs

Inventory:           
Estimated Lead Time

The ZZ4-38CS is a regular extension spring by Century Spring. It is made from Music Wire and has a natural finish. This spring has a wire diameter of 0.013 inches, an outside diameter of 0.094 inches, and a free length of 0.5 inches. It has an initial tension of 0.2 Pound and a maximum deflection of 0.41 inches. The ZZ4-38CS has a spring rate of 3 lbs/inch and can withstand a maximum load of 1.4 Pound Force. It is a full loop spring, meaning the ends are closed. The ZZ4-38CS is a standard extension spring suitable for various applications.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. We understand the importance of quick delivery, and that's why we ensure prompt shipment of our products, including the ZZ4-38CS. Additionally, all our springs are proudly made in the United States. This commitment to quality and local manufacturing allows us to provide reliable springs that meet the needs of our customers. Trust Century Spring for your spring requirements, and experience the convenience of our efficient shipping and abundant inventory.

Download CAD
Unit System
Specs (in standard)
Label Value
A) Brand Century Spring
B) Sku ZZ4-38CS
C) Part Type Standard
D) Material Music Wire
E) Wire Diameter 0.013 in
F) Outside Diameter 0.094 in
G) Length 0.5 in
H) End Type Full Loop
I) End Position Random
J) Rate 3 lbs/in
K) Initial Tension 0.2 lb
L) Sugg Max Deflection 0.41 in
L) Sugg Max Load 1.4 lbf
O) Finish None
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku ZZ4-38CS
C) Part Type Standard
D) Material Music Wire
E) Wire Diameter 0.33 mm
F) Outside Diameter 2.39 mm
G) Length 12.7 mm
H) End Type Full Loop
I) End Position Random
J) Rate 0.53 N/mm
K) Initial Tension 0.09 kg
L) Sugg Max Deflection 10.41 mm
L) Sugg Max Load 6.23 N
O) Finish None