Caja surtida - Tornillos - 328 piezas de tornillos de cabeza hexagonal, tuercas y arandelas, acero al carbono negro, hexagonal interno surtido

High-quality materials: The screws, bolts, nuts, and washers with internal hexagon heads are made of high-quality carbon steel with good mechanical strength, wear resistance, corrosion resistance, good toughness, and durability. Easy to store: All black screws, bolts, nuts, and washers with internal hexagon heads are packed in plastic storage boxes, and all nuts and screw fasteners are placed in the corresponding compartments for easy storage and transport. Wide application: Widely used in various industries including precision machinery, electronic products, household appliances, classification instruments, instruments, communication products, automobiles, etc. Suitable for professionals, homeowners, DIY enthusiasts, repairers, carpenters, construction workers, amateurs, etc.