button head wood screw

Made from high-quality 12.9-grade alloy steel known for its dependable and rigid strength as well as its corrosion-resistant quality. This type of steel is able to withstand drastic weather and temperature changes including placement within extremely humid areas. The surface of the 12.9-Class hexagon socket screws is becoming hard and stronger after heat treatment and with the good features of anti-oxidation, high-temperature resistance, anti-corrosion.