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166-ACS - 1.50 Inch Music Wire Extension Springs

The 166-ACS is a regular extension spring manufactured by Century Spring. It is made from high-quality music wire and has a zinc finish. This spring has a wire diameter of 0.016 inch and an outside diameter of 0.188 inches. It has a free length of 1.5 inches and an initial tension of 0.09 pound. The maximum deflection of this spring is 4.5 inches, and it can handle a maximum load of 1.1 pound force. The 166-ACS has a spring rate of 0.23 inches per pound. It features machine hook ends and a left wind direction. This extension spring is suitable for a variety of applications.

At Century Spring, we understand the importance of fast shipping and readily available inventory. We take pride in maintaining a significant stock of springs, including the 166-ACS. Our products are proudly made in the United States, ensuring high-quality craftsmanship and materials. With our efficient shipping process and ample supply, Century Spring guarantees that you will receive the springs you need promptly for your projects.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 0.09 lb
Length 1.5 in
Material Music Wire
Outside Diameter 0.188 in
Part Type Standard
Rate 0.23 lbs/in
SKU 166-ACS
Sugg Max Deflection 4.5 in
Sugg Max Load 1.1 lbf
Wind Direction Left
Wire Diameter 0.016 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 0.04 kg
Length 38.1 mm
Material Music Wire
Outside Diameter 4.78 mm
Part Type Standard
Rate 0.04 N/mm
SKU 166-ACS
Sugg Max Deflection 114.3 mm
Sugg Max Load 4.89 N
Wind Direction Left
Wire Diameter 0.41 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $1.87
50 - 149 $1.78
150 - 299 $1.69
300 - 499 $1.59
500 - 749 $1.41
750 - 999 $1.22
1000+ Call for price