Fixing mast bands

[glynn]

I just had one of those exciting deliveries. Two shiny new 316 stainless mast bands for my lovely Douglas Fir mast, but..

I really don't know the best way to fix them.One sits on a shoulder and the other has a stainless threaded bar through the mast and back into the band.
What material should I bed them on with, and should the shouldered band be screwed on as well?

Any help would be appreciated.

Glynn