Mechanical galvanizing and hot dip galvanizing are not to be mixed on the same assembly.?
more on hot dip galvanizing • Improve the bolting storage conditions. Bolts must be kept in sealed kegs out of the weather, until they are stuffed in the holes. Remember, if the bolts and nuts are allowed to deteriorate unnecessarily, the extra cost of wrenches breaking and the added labor will far exceed any costs to protect the bolts.