20 hexagonal head screws, external hexagonal screw with high resistance class 12.9, M6 40 mm,

Type of head: Hexagonal external

M6 x 40 mm or larger, is a medium rosca

Material: Acero al carbono de alta resistencia de grado 12.9

Characterísticas: Buena resistance to traction and corrosion in various twists, easy to use and anti-slip, robust and reliable.

Application: Tornillos widely used in electrical appliances and offices, communications equipment, boat sets and other machinery industries.