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.

4. Strong Joint Integrity When properly installed, self-drilling bolts provide a robust connection that can withstand various types of stresses. The threading design ensures a tight fit, which is critical in applications where vibration or movement is a concern.

1. Corrosion Resistance One of the primary advantages of stainless steel foundation bolts is their resistance to rust and corrosion. Unlike traditional steel, which can degrade over time when exposed to water, chemicals, or harsh weather conditions, stainless steel maintains its integrity. This is particularly important in coastal areas or regions with high humidity, where conventional bolts might fail, leading to structural issues.