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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

0.12

Wire Diameter

0.018

Free Length

0.375

Max. Load

2.2

Max. Extension

0.52

Initial Tension

0.25

Spring Rate

13.40

Max. Load (SS)

1.880

Max. Extension (SS)

0.52

Initial Tension (SS)

0.21

Spring Rate (SS)

11.7