GB21 Small Hexagon Head Bolt

GB21 small hexagon head bolts are standard fasteners used in automobile manufacturing, mechanical equipment, building structures and other fields. The bolts comply with the GB21 national standard and have excellent mechanical properties and reliable connection strength. Its small hexagon head design can provide higher torque transmission in a limited space while optimizing installation efficiency.

GB21 small hexagon head bolts are made of high-strength alloy steel and undergo a heat treatment process to improve wear resistance and tensile strength to meet the high requirements of the automotive industry for fasteners. The surface treatment of the bolts can be galvanized, electrophoresed or other anti-corrosion processes as required to enhance rust resistance and improve durability. In the automotive field, GB21 small hexagon head bolts are often used in key parts such as engine components, chassis connections, suspension systems, etc., providing vehicles with safe and reliable fastening solutions