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Good advice before starting to drill. The other option is take a 7/16 nut and weld thru the middle of the nut to the bolt. Don't try to penetrate to much at the edge of the nut. Build a good bead into the bolt and then up into the nut. 6011 rod works well for this. Or a wire feed running hot. If...

Okay Al, I'll bite, And what do you do after the newbie breaks the carbide bit off in the bolt?:?

High speed Cobalt drills will work to drill GR 8 bolts. Just keep squirting WD-40 or some thing similar to lube and cool it. And try to keep your drill rpm's low and the bit sharp. The bad thing with Carbide is, if you break it you have to torch the bolt out. If Netree is offering to have a...