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5643CS - 16.50 Inch Spring Steel Extension Springs

Inventory Status
Limited Availability
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours

The 5643CS is a regular extension spring manufactured by Century Spring. It is made from spring steel and features a zinc finish. With a free length of 16.5 inches and an initial tension of 19 pounds, this spring offers a maximum deflection of 8.5 inches and can withstand a maximum load of 75 pound force. It has an outer diameter of 1 inch and a wire diameter of 0.135 inches. With a spring rate of 6.7 lbs/inch, the 5643CS is a left-wound spring with machine hook ends. It is a reliable and versatile spring suitable for a range of applications.

At Century Spring, we take pride in our fast shipping and extensive stock inventory. We understand the importance of timely delivery, and we ensure that our customers receive their springs quickly. Additionally, all our products, including the 5643CS, are proudly made in the United States. We prioritize quality, reliability, and customer satisfaction, offering a wide selection of springs to meet your needs. Trust Century Spring for your spring requirements, and experience our efficient service and commitment to excellence.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 19 lb
Length 16.5 in
Material Spring Steel
Outside Diameter 1 in
Part Type Standard
Rate 6.7 lbs/in
SKU 5643CS
Sugg Max Deflection 8.5 in
Sugg Max Load 75 lbf
Wind Direction Left
Wire Diameter 0.135 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 8.62 kg
Length 419.1 mm
Material Spring Steel
Outside Diameter 25.4 mm
Part Type Standard
Rate 1.17 N/mm
SKU 5643CS
Sugg Max Deflection 215.9 mm
Sugg Max Load 333.6 N
Wind Direction Left
Wire Diameter 3.43 mm