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5191CS - 3.94 Inch Music Wire Extension Springs

The 5191CS is a regular extension spring manufactured by Century Spring. It is made from high-quality music wire and has a durable zinc finish. This spring has a wire diameter of 0.035 inches, an outside diameter of 0.281 inches, and a free length of 3.94 inches. With an initial tension of 1 Pound, it can provide the necessary force for various applications. The 5191CS has a maximum deflection of 4.4 Inch and can withstand a maximum load of 7.4 Pound Force. It features machine hooks at both ends for secure attachment. Century Spring's 5191CS is a reliable extension spring suitable for a wide range of projects.

Century Spring takes pride in its fast shipping and extensive stock inventory. We understand the importance of promptly delivering the springs our customers need. With our significant supply on hand, including the 5191CS, we can fulfill orders quickly and efficiently. Additionally, all of our springs are proudly made in the United States, ensuring high-quality craftsmanship and supporting local manufacturing. Count on Century Spring for fast shipping, a wide selection, and top-notch springs made right here in the USA.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 1 lb
Length 3.94 in
Material Music Wire
Outside Diameter 0.281 in
Part Type Standard
Rate 1.5 lbs/in
SKU 5191CS
Sugg Max Deflection 4.4 in
Sugg Max Load 7.4 lbf
Wind Direction Left
Wire Diameter 0.035 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish Zinc
Initial Tension 0.45 kg
Length 100.08 mm
Material Music Wire
Outside Diameter 7.14 mm
Part Type Standard
Rate 0.26 N/mm
SKU 5191CS
Sugg Max Deflection 111.76 mm
Sugg Max Load 32.92 N
Wind Direction Left
Wire Diameter 0.89 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours
Quantity Price
1 - 49 $3.35
50 - 149 $3.19
150 - 299 $3.02
300 - 499 $2.85
500 - 749 $2.52
750 - 999 $2.18
1000+ Call for price