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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

Extension

Material

Stainless Steel

Outside Diameter

0.3

Wire Diameter

0.049

Free Length

3.000

Max. Load

15.2

Max. Extension

4.29

Initial Tension

2.2

Spring Rate

10.10

Max. Load (SS)

13.000

Max. Extension (SS)

4.26

Initial Tension (SS)

1.9

Spring Rate (SS)

8.8