Description: These screws are made of alloy steel, which provides strength. Flat heat design is ideal for use in confined areas as fixing component, industrial and construction fasteners. There are many length for your choice which can be commonly used in home and office appliance, machinery, furniture, repair and inventions. Features: Made of alloy steel material, the alloy steel material provides strength. Ideal for use in confined areas as fixing component, industrial and construction fasteners. There are many different length of flat head screws that you can choose. Total 50 pieces per pack for general purpose use, meet daily basic needs. Used widely in the home and office appliance, communication equipment, ship assembly and other machinery industry. Specifications: Material: 10.9 Class alloy steel Type: Button head hex socket Size(Optional): M3 x 6mm M3 x 8mm M3 x 10mm M3 x 12mm M3 x 16mm M3 x 20mm M3 x 25mm M3 x 30mm M3 x 35mm M3 x 40mm Quantity: 50pcs Package Includes: 50pcs x Screws Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.