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      The future of the JD Forum   07/31/18

      Thank you all for your participation on the JD Forums.  We have enjoyed answering your questions, providing project advice and technical assistance on this forum for a number of years. We believe that there are now better ways to provide this service for our customers and the community. With that in mind, we have made the difficult decision to discontinue the Jamestown Distributors Forum.   Our JD Tech Team is committed to being your trusted technical resource, and we encourage you to reach out via email, phone, social, product reviews, and to post questions using the Q & A 'Ask A Question' function on all product pages. Additional information can also be found on product page Technical Data Sheets (including detailed usage instructions and application data).   Thank You Jamestown Distributors 
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nrgarvin

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

4 posts in this topic

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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