My radiator drain plug broke off the head (06 e53 m54). It'll take days to get a replacement, nobody around here stocks it and I can't be without a car.

Does anyone know what the thread pitch is on these stupid things so I can grab a bolt and an O-ring to tide me over until the new one comes in?

Thanks!

__________________
2006 BMW X5, 3.0i - 161,000 miles
2003 Ford Mustang GT - because having Two cars that keep dying seemed more exciting.