Are steel screws good for boats ?

Why did some steel screws that were used to fasten a boat's hull that was made of brass, come apart soon ???

Other answer:

Rula:
The old boat hulls like Cris Craft used were bronze. They would corrode after time if the hull was not taken care of. Stainless steel screws are better (and cheaper) but some traditionalist will opt for the "original" screws.
Mackenzie:
Stainless is best for boats, especially those used in salt water.
Sailor:
As Me Brod has said there is a chemical reaction between two dissimilar metals, the sea water acting as a catalyst. If stainless steel is used either screws or bolts then it has to be at least to A4.
yankee_sailor:
If I get your question correctly ..the boat was originally fastened with brass.( actually bronze….no oe would ever use brass as astructual screw) and someone threw in somesteel screws which ahve rusted away.

As Brod said….galvanic action……..go look up 'galvanic table" and you will see stuff on the lower end of the scale .zinc, iron,steel…will be eaten away in salt water by stuff higher up the scale.

If the boat is bronze (or…. shudder….. brass) fastened , stainless is easier to find and an acceptable match.

Bronze, brass and stainless….as well as galvanized ….are all available at Jamestown Distributors…find them on line

Adam:
Stainless is best for boats, especially those used in salt water.
Ruth:
Stainless is best for boats, especially those used in salt water.
Tim:
Stainless is best for boats, especially those used in salt water.
stargate:
Stainless is best for boats, especially those used in salt water.
Me Brod:
Chemical reaction between two metals that are not compatable. Use "Stainless in all marine applications. West Marine.com has them.

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