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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

B17-129CS - 2.50 Inch Music Wire Extension Springs

Inventory:           
Estimated Lead Time

The B17-129CS 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 0.015 inch and an outer diameter of 0.281 inches. With a free length of 2.5 inches, it provides a maximum deflection of 22 inches. The B17-129CS has an initial tension of 0.03 pound and a maximum load capacity of 0.63 pound force. It is designed with full loop ends and has a spring rate of 0.03 lbs/inch. This standard extension spring is suitable for a wide range of applications.

At Century Spring, we pride ourselves on our fast shipping and extensive stock inventory. We understand the importance of getting the right springs quickly, which is why we strive to process and ship orders as soon as possible. Additionally, all of our springs, including the B17-129CS, are proudly made in the United States. We prioritize quality and reliability in our manufacturing process to ensure that our customers receive the best products for their needs. With Century Spring, you can trust that you'll receive top-notch springs with efficient delivery.

Download CAD
Unit System
Specs (in standard)
Label Value
A) Brand Century Spring
B) Sku B17-129CS
C) Part Type Standard
D) Material Music Wire
E) Wire Diameter 0.015 in
F) Outside Diameter 0.281 in
G) Length 2.5 in
H) End Type Full Loop
I) End Position Random
J) Rate 0.03 lbs/in
K) Initial Tension 0.03 lb
L) Sugg Max Deflection 22 in
L) Sugg Max Load 0.63 lbf
O) Finish Zinc
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku B17-129CS
C) Part Type Standard
D) Material Music Wire
E) Wire Diameter 0.38 mm
F) Outside Diameter 7.14 mm
G) Length 63.5 mm
H) End Type Full Loop
I) End Position Random
J) Rate 0.01 N/mm
K) Initial Tension 0.01 kg
L) Sugg Max Deflection 558.8 mm
L) Sugg Max Load 2.8 N
O) Finish Zinc