On 16/06/2020 22:48, petek wrote:
Anyway, to be on the safe side, I'm going to get some 4 x 40mm brass from B&Q tomorrow in the hope they'll be long enough.

I've used SS on my boat for years, and never had a problem with them
shearing. In fact the only time I've had trouble with screws shearing
was when I bought some cheap ones from a shed... Never again.

Andy