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549CS - 3.19 Inch Spring Steel Extension Springs

The 549CS is a regular extension spring manufactured by Century Spring. It is made from spring steel and has a zinc finish. This spring has a free length of 3.19 inches and an initial tension of 4 pounds. It can deflect up to 1.3 inches and has a maximum load of 16 pound force. The 549CS has an outside diameter of 0.375 inches and a wire diameter of 0.056 inches. It has a spring rate of 9.5 inches per pound and a left wind direction. With its extended hook ends, the 549CS is a reliable extension spring suitable for a range of applications.

Century Spring takes pride in our fast shipping and extensive stock inventory. We understand the importance of timely delivery and strive to ensure that our customers receive their springs quickly. Additionally, all our springs, including the 549CS, are proudly made in the United States. We prioritize quality and craftsmanship, and our commitment to manufacturing in the USA reflects that. With Century Spring, you can trust that you'll receive high-quality springs promptly for your projects.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Extended Hook
Finish Zinc
Initial Tension 4 lb
Length 3.19 in
Material Spring Steel
Outside Diameter 0.375 in
Part Type Standard
Rate 9.5 lbs/in
SKU 549CS
Sugg Max Deflection 1.3 in
Sugg Max Load 16 lbf
Wind Direction Left
Wire Diameter 0.056 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Extended Hook
Finish Zinc
Initial Tension 1.81 kg
Length 81.03 mm
Material Spring Steel
Outside Diameter 9.53 mm
Part Type Standard
Rate 1.66 N/mm
SKU 549CS
Sugg Max Deflection 33.02 mm
Sugg Max Load 71.17 N
Wind Direction Left
Wire Diameter 1.42 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $27.52
50 - 149 $26.15
150 - 299 $24.77
300 - 499 $23.40
500 - 749 $20.64
750 - 999 $17.89
1000+ Call for price