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Extension Spring

Extension Springs — In Stock & Ready to Ship

Lee Spring stocks wide selection of extension springs in standard and instrument series configurations available for immediate shipment. Our in-stock extension spring inventory includes music wire, Type 302 stainless steel, and Type 316 stainless steel options with various end loop configurations. Filter by outside diameter, wire diameter, free length, initial tension, and maximum load to find the exact specification you need easily. All stock extension springs include free standard ground shipping option and a Certificate of Compliance. Learn more about Extension Springs and How to Measure an Extension Spring.

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Part Number	Outside Diameter (cm)	Outside Diameter (inch)	Outside Diameter (mm)	Wire Diameter (cm)	Wire Diameter (inch)	Wire Diameter (mm)	Max Load (gm)	Max Load (kg)	Max Load (lb)	Max Load (N)	Rate (gm/cm)	Rate (gm/mm)	Rate (kg/cm)	Rate (kg/mm)	Rate (lb/inch)	Rate (N/cm)	Rate (N/mm)	Max Extended Length (cm)	Max Extended Length (inch)	Max Extended Length (mm)	Initial Tension (gm)	Initial Tension (kg)	Initial Tension (lb)	Initial Tension (N)	Free Length (cm)	Free Length (inch)	Free Length (mm)	Material	Compare

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Extension Spring

Extension Springs

Free Length

Max Extended Length

Max Extended Length

Outside Diameter

Outside Diameter

Loop Length

Loop Opening

Wire Diameter

Load Reference

Why Choose Lee Spring?

FREE Standard Ground Shipping

on Stock Springs in the Continental United States

FREE Plating

on all Music Wire Stock Springs

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Expert Engineering Assistance

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Certificate of Compliance

on all Stock Springs and Custom Springs

Guaranteed RoHS Compliance

on all Stock Springs

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