Karl Townsend wrote:
I need to drill a hole in a grade 8 bolt. three actually, two cross
and one axially. I remember this was a stone bitch from last time I
tried. I got one shot this time. Should I drill it slow and hard like
stainless, or fast and light pecks? Other suggestions?

It depends on the material Karl not the rating as a bolt.
Carbon steel and Stainless are both avaliable in grade 8.



--
John R. Carroll