In the aerospace industry, where safety, durability and precision are paramount, corrosion-resistant fasteners ensure critical component longevity, with the choice of fasteners directly impacting performance and safety. Here, we take a close look at the significance of corrosion-resistant fasteners in aerospace applications, the materials and technologies behind their effectiveness, and how they address the unique challenges of corrosive environments. Understanding Corrosion and Its Impact on Aerospace Fasteners Corrosion is the gradual degradation of materials—particularly metals—due to chemical reactions with the environment. Aerospace applications expose fasteners to extreme conditions, including salt water, varying temperatures and corrosive elements such as humidity and pollutants. Left unchecked, corrosion compromises the structural integrity of fasteners, leading to failures that can jeopardise an aircraft’s safety. For