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77CS - 3.75 Inch High Carbon Steel Extension Springs

The 77CS is a regular extension spring manufactured by Century Spring. It features machine hook ends and is designed for use in chaise lounges. Made from High Carbon steel with a zinc finish, this spring has a free length of 3.75 inches and an initial tension of 12.4 pounds. With a maximum deflection of 1.5 inches and a maximum load of 50 pounds force, it offers reliable performance. The 77CS has a standard measurement unit and an outside diameter of 0.75 inches. Its spring rate is 26 inches per pound, and it has a shipping weight of 0.1465 pounds. This left-wind spring has a wire diameter of 0.105 inches, making it suitable for various applications.

At Century Spring, we are proud to offer fast shipping and maintain a significant stock inventory. Our springs, including the 77CS, are made in the United States. With our efficient shipping and ample supply, we ensure that customers can quickly receive the high-quality springs they need for their projects. Trust Century Spring for all your spring requirements.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
End Use Chaise Lounge
Ends Machine Hook
Finish Zinc
Initial Tension 12.4 lb
Length 3.75 in
Material High Carbon Steel
Outside Diameter 0.75 in
Part Type Standard
Rate 26 lbs/in
SKU 77CS
Sugg Max Deflection 1.5 in
Sugg Max Load 50 lbf
Wind Direction Left
Wire Diameter 0.105 in
Specs (in metric)
Label Value
Brand Century Spring
End Use Chaise Lounge
Ends Machine Hook
Finish Zinc
Initial Tension 5.62 kg
Length 95.25 mm
Material High Carbon Steel
Outside Diameter 19.05 mm
Part Type Standard
Rate 4.55 N/mm
SKU 77CS
Sugg Max Deflection 38.1 mm
Sugg Max Load 222.4 N
Wind Direction Left
Wire Diameter 2.67 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $4.09
50 - 149 $3.89
150 - 299 $3.69
300 - 499 $3.48
500 - 749 $3.07
750 - 999 $2.66
1000+ Call for price