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5781CS - 2.88 Inch Spring Steel Extension Springs

The 5781CS is a regular extension spring manufactured by Century Spring. It features a machine hook on both ends and is made from spring steel with a gold iridite finish. This spring has a free length of 2.88 inches and an initial tension of 2 pounds. With a maximum deflection of 2.8 inches and a maximum load of 13 pound force, the 5781CS is a reliable choice for various applications. Its outside diameter measures 0.656 inches, and it has a wire diameter of 0.064 inches. This spring has a rate of 4 inches per pound.

Century Spring takes pride in its fast shipping and extensive stock inventory. We understand the importance of quick delivery and offer efficient shipping options to ensure customers receive their springs promptly. Additionally, all our springs, including the 5781CS, are proudly made in the United States. This commitment to local manufacturing allows us to maintain strict quality control and provide customers with reliable and durable products. Trust Century Spring for your spring needs, and experience our exceptional service and high-quality springs firsthand.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Gold Iridite
Initial Tension 2 lb
Length 2.88 in
Material Spring Steel
Outside Diameter 0.656 in
Part Type Standard
Rate 4 lbs/in
SKU 5781CS
Sugg Max Deflection 2.8 in
Sugg Max Load 13 lbf
Wind Direction Left
Wire Diameter 0.064 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Gold Iridite
Initial Tension 0.91 kg
Length 73.15 mm
Material Spring Steel
Outside Diameter 16.66 mm
Part Type Standard
Rate 0.7 N/mm
SKU 5781CS
Sugg Max Deflection 71.12 mm
Sugg Max Load 57.82 N
Wind Direction Left
Wire Diameter 1.63 mm
Inventory Status
Low Stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $7.23
50 - 149 $6.87
150 - 299 $6.51
300 - 499 $6.15
500 - 749 $5.43
750 - 999 $4.70
1000+ Call for price