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

M-39CS - 1.09 Inch Music Wire Extension Springs

Inventory:           
Estimated Lead Time

The M-39CS 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 0.025 inch and an outside diameter of 0.156 inches. It has a free length of 1.09 inches and an initial tension of 0.9 pounds. The M-39CS has a maximum deflection of 0.6 inch and can handle a maximum load of 5.1 pounds. With a spring rate of 7 lbs/inch, it provides reliable extension and retraction capabilities. This left-wound spring features machine hook ends, making it easy to install and secure in place. The M-39CS is a versatile extension spring suitable for a wide range of applications.

Century Spring takes pride in our fast shipping and extensive stock inventory. We understand the importance of prompt delivery and ensuring that our customers have access to the springs they need when they need them. All of our products, including the M-39CS, are proudly made in the United States. We prioritize quality and reliability in our manufacturing process, ensuring that our customers receive top-notch springs for their projects. With Century Spring, you can trust that you'll receive exceptional products and excellent service.

Download CAD
Unit System
Specs (in standard)
Label Value
A) Brand Century Spring
B) Sku M-39CS
C) Part Type Standard
D) Material Music Wire
E) Wire Diameter 0.025 in
F) Outside Diameter 0.156 in
G) Length 1.09 in
H) End Type Machine Hook
I) End Position Random
J) Rate 7 lbs/in
K) Initial Tension 0.9 lb
L) Sugg Max Deflection 0.6 in
L) Sugg Max Load 5.1 lbf
O) Finish Zinc
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku M-39CS
C) Part Type Standard
D) Material Music Wire
E) Wire Diameter 0.64 mm
F) Outside Diameter 3.96 mm
G) Length 27.69 mm
H) End Type Machine Hook
I) End Position Random
J) Rate 1.23 N/mm
K) Initial Tension 0.41 kg
L) Sugg Max Deflection 15.24 mm
L) Sugg Max Load 22.68 N
O) Finish Zinc