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Selection
Extension Springs are organized in order of increasing diameter and wire size. Note that in each category the spring rate decreases as the length increases.
Unit of Measure

Specifications

Type

 N/A Extension

Material

 N/A Music Wire

Outside Diameter

 N/A 0.063

Wire Diameter

 N/A 0.008

Free Length

 N/A 0.750

Max. Load

 N/A 0.41

Max. Extension

 N/A 1.66

Initial Tension

 N/A 0.03

Spring Rate

 N/A 0.42

Max. Load (SS)

 N/A 0.340

Max. Extension (SS)

 N/A 1.6

Initial Tension (SS)

 N/A 0.02

Spring Rate (SS)

 N/A 0.37