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Compass Marine How To | all galleries >> Compass Marine How To Articles >> Servicing Tapered Cone Seacocks > A Bonding No, No..!
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A Bonding No, No..!
19-MAY-2011

A Bonding No, No..!

These screws are for winter draining of the seacocks for boats stored in-water. They should NOT be used for tying bonding wires to. These are an odd size machine screw in a special bronze that are nearly impossible to get, even from Spartan. Bonding should be tied to the flange bolts only, not the drain plugs. Just because a couple of major builders did it wrong does not mean you need to as well.


If you have 30 year old drain screws that are bonded to I would leave well enough alone as the threads often fail when trying to get them out.




Hope this helps. Good luck with your projects!!


other sizes: small medium original
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eddie 27-Jun-2011 10:31
great post--thank you now we know!