A hot-dip galvanized bolt is a bolt immersed in molten zinc for protective coating. This coating makes the bolt corrosion resistant yet more affordable than stainless steel.
Bolts are one of the most common basic hardware parts you can see in any industry–automotive, construction, agriculture, etc. Bolts definition is they are mechanical fasteners that connect different parts. Its parts include the head and a threaded cylindrical body. Bolts are usually used with washers and nuts to lock them in position and prevent loosening or crushing. One reason bolts are popular across all industries is that it makes assembly, disassembly, and reassembly easier compared to permanent fastening such as welding.
Bolts should not be confused with screws, however. As mentioned previously, bolts definition is they are mechanical fasteners that connect different parts. Screws are also mechanical fasteners; however, how they look and how they are used are different.