M20 high-strength bolt is a high-hardness, high-toughness structural fastener, available in 8.8/10.9/12.9 grade. Featuring ultra-high tensile strength, excellent fatigue resistance and stable locking performance. Standard M20 thread specification, strictly manufactured in accordance with international fastener standards. Widely used for steel structure connection, mechanical equipment assembly, bridge engineering, construction and heavy-duty fixture projects.
