Blaster blaster f/a thread size (diameter)

Does anyone know the thread diameter for blaster air intake into stock mikuni carb. I'm away from home and near a cool hardware store that has all kinds of metric that home depot back home doesn't. Im thinking its 4 or 5mm diameter.
 
I just reread what ur asking and if you want the bolt size that that bolts the f/a base to the carb than thats 6mmx1.0 and the 5mm will bolt the plastic cover on the base.
Hope that helps.
 
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