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303CS - 2.75 Inch Spring Steel Extension Springs

The 303CS is a regular extension spring manufactured by Century Spring. It is made from high-quality spring steel and has a machine hook on both ends. This spring has a free length of 2.75 inches and an outside diameter of 0.343 inches. It has an initial tension of 0.2 pounds and a spring rate of 0.32 inches per pound. The 303CS is designed to handle a maximum load of 0.22 pound force and has a maximum deflection of 0 inches. With its left wind direction and wire diameter of 0.031 inches, this extension spring is perfect for a variety of applications.

Century Spring takes pride in its fast shipping and extensive inventory. We understand the importance of getting your springs quickly, which is why we offer prompt shipping on all our products. With our significant stock of springs, including the 303CS, you can trust that we have the springs you need readily available. What sets us apart is that all our springs are proudly made in the United States, ensuring the highest quality and supporting local manufacturing. Trust Century Spring for all your spring needs and experience our efficient shipping and American-made excellence.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 0.2 lb
Length 2.75 in
Material Spring Steel
Outside Diameter 0.343 in
Part Type Standard
Rate 0.32 lbs/in
SKU 303CS
Sugg Max Deflection 0 in
Sugg Max Load 0.22 lbf
Wind Direction Left
Wire Diameter 0.031 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 0.09 kg
Length 69.85 mm
Material Spring Steel
Outside Diameter 8.71 mm
Part Type Standard
Rate 0.06 N/mm
SKU 303CS
Sugg Max Deflection 0 mm
Sugg Max Load 0.98 N
Wind Direction Left
Wire Diameter 0.79 mm
Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours

Pricing reflects the base un-configured part price. Final per piece price including configured options will be calculated once a quantity is entered in the field above.

Quantity Price
1 - 49 $6.10
50 - 149 $5.80
150 - 299 $5.49
300 - 499 $5.19
500 - 749 $4.58
750 - 999 $3.97
1000+ Call for price