hi, i will never use a easy out on bolts, they are just too easy to snap in teh bolt.

you can drill any type of bolt even HIGH TENSILE , but u will have to use a BRAND NEW drill bit , .
i have had bolts break while undoing !!! a head, i get a grinder/cutting wheel, make sure the bolt is level with teh surrounding surface , then drill it out , and then put a heli coil in it .
mark k]