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nrgarvin

Chris Craft "PM" Nuts? Flat, Square, Silicone Bronze

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Where can I get the #8-32 Chris Craft "PM" (Press Metal) nuts they used to secure the lapstrake siding on the 60's vintage boats?

 

These are approximately 3/8" square (.490" measured) silicone-bronze material, .050"  thick with a shallow curve and the corners slightly bent down to bite into the wood to prevent rotation.

 

It is possible they were just stamped with a punched hole and a self tapping screw was used. The inside of the screws are cut off to be flush with the nut after it was tightened so I can't tell if it was a thread cutting screw or not.

 

 

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We only have PM Nuts in Stainless Steel, not silicone bronze.  I saw some vendors in a google search but didn't see anything in 8/32.

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Thanks, I purchased several sizes of PM nuts from JD. They are 18-8 stainless. Are there any corrosion issues with using 18-8 screws in lapstrake sides compared to silicone-bronze or 316 SS?

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Silicone bronze would be better than 18-8 stainless because the 18-8 will rust somewhat eventually where the silicone bronze will not.  The stainless should last quite a few years though.  Be sure to use stainless screws with them.

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