1. Self-Locking Mechanism One of the standout features of metal expansion nuts is their ability to lock into place without additional locking devices. This self-locking characteristic significantly enhances the safety and durability of applications.

Metal expansion nuts serve as a vital component in ensuring mechanical integrity and stability in various applications. Their unique design allows for effective load management, self-locking capabilities, and adaptability to different materials and conditions. As industries continue to evolve, the role of metal expansion nuts will undoubtedly expand, contributing to the safety and efficiency of structures and machinery. Whether in construction, automotive, or other fields, understanding these fasteners' advantages can enhance engineering practices and promote better design solutions.

The M in M20 signifies that it is a metric bolt, aligning with the International System of Units (SI). The number 20 denotes that the nominal diameter of the bolt is 20 millimeters. Foundation bolts are typically made from high-strength materials, such as structural steel, to ensure they can withstand substantial loads and resist environmental factors.

2. Automotive In the automotive industry, these bolts can be found securing body panels, engine components, and various assemblies. Their reliability and strength are key factors in ensuring vehicle safety and integrity.