On 2015-09-17, noname wrote:

But if I had to do it all over again, I'd find a good grade of
stainless steel deck screws.

So far, I'm tending to agree.

I bought some 3/8-16 SS bolts/nuts/washers to secure the hand rail
uprights to my mom's deck step risers (Ima mechanical kinda guy). I
got 'em at True Value Hardware, so was not real sure if they were a
good grade of stainless. The few bolts I didn't use, I left outdoors
in the weather. After 6 yrs of rain/snow/sun, all parts show zero
signs of rust. I'm amazed!

nb