Looking for some advice, I need to order some replacement socket type head (Allen key) screw m5 x 25mm for fuel cap. I need to replace 6 as they have started to rust, I looked at Pro-Bolt and the cost listed was £31.93 posted....

I have found the site below, any one used them?

https://www.westfieldfasteners.co.uk/index.html

Any advice would be great, obviously want stainless steel type.

Thanks all