[G.R.]

Make sure they are stainless--easy way put a magnet on them if it sticks buy stainless---tape your dash before drilling, helps to keep the glass and paint from chipping--drill one size under the screw screwshank ie: 1/8th shank use a 3/16th bit or a 7/64th bit-----use a silicone (RTV works great)as a lubricant and glass sealer---DON'T use a power driver---thread it in by hand, if starts to bind(it will), back it out and re-lube, try again, the screw will usually begin cutting threads again---I always have extra S/S screws of the size I need on hand, if the screwdriver slips you'll screw up the head, if you force the screw you will more than likely pop the head off--after you have drilled the holes re-lube the screws then mount the mirror.

I've installed a lot of equipment on boats in the last 20 years and this method works. Have used it on my car also.


PS--the Screws sent w/ my Finishline mirror were S/S-- hasn't wiggled or come loose yet from vibration.