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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.

190 DAYS

5171CS - 8 Inch Spring Steel Extension Springs

Inventory:           
Estimated Lead Time

The 5171CS is a regular extension spring manufactured by Century Spring. Made from spring steel, it features a zinc finish for added durability. This spring has a free length of 8 inches and an initial tension of 2 pounds. With a maximum deflection of 5.6 inches and a maximum load of 8.7 pound force, the 5171CS is a reliable choice for various applications. Its outer diameter measures 0.312 inches, and it has a wire diameter of 0.042 inches. The spring rate is 1.3 lbs/inch. The 5171CS is equipped with machine hook ends and winds in a left direction. As part of our extensive range of high-quality springs, Century Spring ensures that the 5171CS meets the highest standards of performance and reliability.

At Century Spring, we pride ourselves on our fast shipping and extensive stock inventory. We understand the importance of timely delivery, and our efficient shipping processes ensure that customers receive their orders promptly. With our significant stock inventory, including the 5171CS, we are able to meet the demands of various industries and projects. Additionally, all our springs are proudly made in the United States, ensuring the highest level of craftsmanship and quality. Trust Century Spring for your spring needs, and experience our commitment to excellence and customer satisfaction.

Download CAD
Unit System
Specs (in standard)
Label Value
A) Brand Century Spring
B) Sku 5171CS
C) Part Type Standard
D) Material Spring Steel
E) Wire Diameter 0.042 in
F) Outside Diameter 0.312 in
G) Length 8 in
H) End Type Machine Hook
I) End Position Random
J) Rate 1.3 lbs/in
K) Initial Tension 2 lb
L) Sugg Max Deflection 5.6 in
L) Sugg Max Load 8.7 lbf
O) Finish Zinc
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku 5171CS
C) Part Type Standard
D) Material Spring Steel
E) Wire Diameter 1.07 mm
F) Outside Diameter 7.92 mm
G) Length 203.2 mm
H) End Type Machine Hook
I) End Position Random
J) Rate 0.23 N/mm
K) Initial Tension 0.91 kg
L) Sugg Max Deflection 142.24 mm
L) Sugg Max Load 38.7 N
O) Finish Zinc