Hugh, You want to be carefully of using stainless steel bolts in places that will receive little or no circulation of water or air. Stainless steel is subject to pitting and crevice corrosion. You may have seen this when trying to remove a SS bolt from a solid aluminum piece, the aluminum might have some corrosion around the bolt and the bolt head looks great. When some torque is applied to the bolt, the head twists off. Inspection of the bolt shaft shows that the SS looks like it has cancer. R/Jay Resepectfully, Jay K. Jeffries Andros Is., Bahamas Save the whales, collect the whole set. -----Original Message----- Hi All, I just had a talk with a company Altex about having my buoyancy tanks grit blasted, then zinc metal sprayed then painte d. They said don’t Zinc metal spray. Aluminium metal spray is OK. What they said is that the water will penetrate the paint and activate the zinc and paint will come off. I guess the same applies for galvanizing then painting. Does anyone have any comment on this. Also with Aluminium bolted to stainless steel they said don’t use stainless bolts use monel. If it is true what they say it is another caution for P-subbers falling into traps. Hugh Problem with getting older is that I’ve forgotten whether I have forgotten or never knew!
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