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N-303CS - 0.56 Inch Music Wire Extension Springs

Inventory Status
Estimated Lead Time

The N-303CS is a regular extension spring manufactured by Century Spring. It is made from Music Wire and has no finish. This spring has a wire diameter of 0.015 inches, an outer diameter of 0.172 inches, and a free length of 0.56 inches. It has an initial tension of 0.08 Pound and a maximum deflection of 1.1 inches. The N-303CS has a spring rate of 0.85 lbs/inch and can handle a maximum load of 1 Pound Force. It has machine hook ends and is suitable for various extension spring applications.

Century Spring offers fast shipping and maintains a significant stock inventory. We are proud to manufacture our springs in the United States. With our efficient shipping and ample supply, Century Spring ensures that customers can quickly receive the springs they need for their projects.

Unit System
Specs (in standard)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 0.08 lb
Length 0.56 in
Material Music Wire
Outside Diameter 0.172 in
Part Type Standard
Rate 0.85 lbs/in
SKU N-303CS
Sugg Max Deflection 1.1 in
Sugg Max Load 1 lbf
Wind Direction Left
Wire Diameter 0.015 in
Specs (in metric)
Label Value
Brand Century Spring
Ends Machine Hook
Finish None
Initial Tension 0.04 kg
Length 14.22 mm
Material Music Wire
Outside Diameter 4.37 mm
Part Type Standard
Rate 0.15 N/mm
SKU N-303CS
Sugg Max Deflection 27.94 mm
Sugg Max Load 4.45 N
Wind Direction Left
Wire Diameter 0.38 mm