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543CS - 1.44 Inch Spring Steel Extension Springs

The 543CS is a regular extension spring manufactured by Century Spring. It is made from spring steel and has a durable zinc finish. This spring has a wire diameter of 0.06 inches, an outside diameter of 0.5 inches, and a free length of 1.44 inches. With an initial tension of 3 pounds, it can provide the necessary force for various applications. The 543CS has a maximum deflection of 0.64 Inch and can handle a maximum load of 15 pounds. Its left wind direction makes it suitable for specific installations. Trust Century Spring for high-quality springs that meet your needs.

Century Spring takes pride in our fast shipping and extensive stock inventory. We understand the importance of prompt delivery, and our efficient shipping ensures that you receive your springs quickly. In addition, we maintain a significant inventory of springs, including the 543CS, so you can easily find the right product for your project. We are committed to manufacturing our springs in the United States, ensuring that you receive reliable and high-quality products. Trust Century Spring for all your spring needs.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Full Loop
Finish Zinc
Initial Tension 3 lb
Length 1.44 in
Material Spring Steel
Outside Diameter 0.5 in
Part Type Standard
Rate 19 lbs/in
SKU 543CS
Sugg Max Deflection 0.64 in
Sugg Max Load 15 lbf
Wind Direction Left
Wire Diameter 0.06 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Full Loop
Finish Zinc
Initial Tension 1.36 kg
Length 36.58 mm
Material Spring Steel
Outside Diameter 12.7 mm
Part Type Standard
Rate 3.33 N/mm
SKU 543CS
Sugg Max Deflection 16.26 mm
Sugg Max Load 66.72 N
Wind Direction Left
Wire Diameter 1.52 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $2.82
50 - 149 $2.68
150 - 299 $2.54
300 - 499 $2.40
500 - 749 $2.12
750 - 999 $1.84
1000+ Call for price