Hot dip galvanizing are mainly used on structures, fasteners etc. which are used mainly on outside environments .It helps in protecting the steel by forming a layer and is also extremely abrasion-resistant. Coating will have a minimum of 43 micron thickness and due to the development of surface dimensions can get affected . Considering that mostly this process will be selected for the parts having wider tolerance ranges. Mostly on fasteners- nuts will tapped to oversize in-*order to have proper fitment after galvanizing. As hydrogen embrittlement is a concern high tensile fasteners will be processed without using HCL in cleaning process. Also temperature can affect the properties of material and so HDG is not advisable for materials having hardness above 35HRC.