How to replace outdoor stair treads?

[markwatts]

 

 

morning guys,

Quick question.

I am looking to replace my stair treads (external) with new hardwood treads (already purchased)

I am wondering what to secure them to the stringers with.  Currently the treads are secured using thick screws does anyone have any ideas what the best way to do this would be?

The new treads are 250 x 50 x 1100mm 

current set up in pictures below

 

[MitchellMc]

Looks great @markwatts!

Many thanks for the update. Well done.

Mitchell