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5648CS - 6 Inch Spring Steel Extension Springs

The 5648CS is a regular extension spring manufactured by Century Spring. It features machine hook ends and is finished with zinc coating for added durability. This spring has a free length of 6 inches and an initial tension of 4.6 pounds. Made from spring steel, it has a maximum deflection of 3.9 inches and can handle a maximum load of 21 pounds force. With an outside diameter of 0.578 inches and a wire diameter of 0.072 inches, this spring has a rate of 4.3 inch-pounds. It weighs 0.1438 pounds and is wound in a left direction. The 5648CS is a reliable extension spring suitable for various applications.

At Century Spring, we pride ourselves on fast shipping and maintaining a significant stock inventory. We understand the importance of receiving springs promptly for your projects. That's why we ensure quick and reliable shipping. Additionally, all our products, including the 5648CS, are proudly made in the United States. We prioritize quality and craftsmanship in every spring we produce. With our ample supply and commitment to customer satisfaction, Century Spring is your go-to source for all your spring needs.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 4.6 lb
Length 6 in
Material Spring Steel
Outside Diameter 0.578 in
Part Type Standard
Rate 4.3 lbs/in
SKU 5648CS
Sugg Max Deflection 3.9 in
Sugg Max Load 21 lbf
Wind Direction Left
Wire Diameter 0.072 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 2.09 kg
Length 152.4 mm
Material Spring Steel
Outside Diameter 14.68 mm
Part Type Standard
Rate 0.75 N/mm
SKU 5648CS
Sugg Max Deflection 99.06 mm
Sugg Max Load 93.41 N
Wind Direction Left
Wire Diameter 1.83 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $4.92
50 - 149 $4.68
150 - 299 $4.43
300 - 499 $4.19
500 - 749 $3.69
750 - 999 $3.20
1000+ Call for price