Hot Dip Galvanized Hex Nuts: A perforated block of metal possessing and internal or female thread intended for use on an external or male thread such as a bolt for the purpose of tightening or holding two or more bodies in definite relative positions. The galvanized hex nut is made of a low carbon steel and hot dip galvanized for corrosion resistance. Galvanized nuts are also re-tapped after plating to give additional tolerance for galvanized bolts.