One of the key benefits of galvanised hex head bolts is their resistance to rust and corrosion. The galvanisation process involves coating the bolts with a protective layer of zinc, which helps to prevent rust from forming on the surface of the metal. This makes galvanised hex head bolts a long-lasting and reliable choice for outdoor projects.

Additionally, the capability for tool-less installation means that these screws can be utilized in tight spaces where conventional tools may not fit. This flexibility is crucial in various applications, especially in the automotive and electronics industries, where components are often placed in confined areas.

2. Corrosion Resistance Many manufacturers provide M20 bolts with coatings or treatments (like galvanization) to enhance corrosion resistance. This is vital for outdoor and industrial applications where exposure to moisture and chemicals is common.

The Evolution and Importance of Hex Head Self-Drilling Screws