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Old 15-02-2013, 05:44   #1
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Join Date: Nov 2009
Location: Grenada
Boat: Beneteau Idylle 15.5m
Posts: 160
Roll pin material - 18-8 or 420?

The roll pin through the prop shaft to the thrust bearing coupling broke as it was being driven out, not a clean shear but a jagged break near one of the shear points so I guess it was stressed at some point. I know 18-8 SS is the most corrosion resistant, but the shear strength is about half of 420 SS.

Anybody have a clue what material theirs is, or if the 420 would be harder to drive in?
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