Longer screws for Triumph bags

Hello all,
I'm waiting for my Triumph hard bags to be delivered. I was checking out a thread where it was suggested to get longer screws to make mounting easier. I want to get the screws now so I'm ready to install when they come in. I believe the suggestion was for M6x30mm screws.

My question is how many of these screws will I need?

Thanks.

PS: This board rocks!!

[hww62]

You'll need 4 screws for the rear mounts. I have replaced mine with mild steel, but am looking for stainless steel replacements.