My recommendation is, these screws like other soft metal screws need to have a steel screw run in first before you install the bronze screw. I had trouble with them stripping out. Also you might want to consider running a larger pilot hole thru the first board to keep the screws from grabbing that section and not pulling joints tight. Yes, I did use counter sinks with the correct drill bit and length but still had issues.

Silicone bronze is what they recommend for boat building. They are quite expensive and the square heads do strip out pretty easily, so pre-drilling is a must. That said. they do what they are supposed to do.

These are the first order for screws from Jamestown and probably my last. These screws are very dull and take a lot of effort to screw in my mahogany.

Uniform lot, all even finish. Very nice hardware, we'll see how it holds up

I've used the square drive SB screws in both boats I've built and find them a great investment. They get pricier as time passes, but always a good investment.

So much easier to drive these soft screws without stripping the heads as has been my experience with Freerson heads.