M5 x .8 thd
I always have problems understanding metrics.
I know that a 1/4 x 20 bolt means 1/4 inch diameter, 20 threads per inch. That's so easy.
Then they shove metrics into our lives and all hell breaks loose...
I'm going to take a guess,
The "M" means METRIC
The "5" means 5 milimeter (mm)
The ".8" I dont understand at all. It's surely not .8 threads per inch, or that would mean less than one thread per inch.
I'm sure the "thd" means THREAD
I googled this and 5mm is 0.197 inch, which needs a 4.20mm drill size. (NOT what I was looking for)!
Damn, I hate metrics . . . . . . . .