Tapping Drill Sizes

[Dave]

Don't know if this of use to anyone? but it's a chart I made up for my own benefit a few years back.
So if any of you need to thread a hole, this might help 

   

Thanks to Village Id 

[Lee]

That was me by the way 

I used to drill a lot of holes 



         

[Dave]

I used to drill a lot of holes           

What were those round plates with lots of holes in Lee?

[Lee]

What were those round plates with lots of holes in Lee?

Baffle plates ..... are you baffled 
Part of the tube bundles (heat exchangers) used in industrial air conditioning and submarines

[Dave]

Ok that explains that, thank you 

[Camper6]

I have a tap hanging around here in my kitchen other than the water tap.  I don't know where it came from.