Features Premium Material: Countersunk head flat head self-tapping screws are made of high quality 304 stainless steel material to ensure durability and stability, with higher tensile strength, strong durability and longer service life. Phillips Screw: The set of countersunk flat head self-tapping screws is a standard Phillips screw, which is not easy to slip during installation, and it is very convenient to replace faulty, cracked or damaged screws. Clear Thread: M4 flat head self-tapping screw set has clear thread, uniform force, very sharp and strong thread, not easy to lose teeth, will not be easily peeled off by screw gun, installation is tight. Scope Of Application: Countersunk head flat head self-tapping screws have strong penetrating power and easy installation, and are often used in digital products, household appliances, mechanical equipment, etc. Ideal for office, home, commercial and industrial applications. Intimate Service: We provide 7-day worry-free return and exchange service for all customers. If you have any questions about our countersunk head tapping screw sets, you are welcome to contact us and we will be happy to serve you. Description: These screws are made of 304 stainless steel, which is durable, resistant to rust and corrosion. There are many length in one set which can be commonly used in home and office appliance, wood furniture, repair and inventions. Specifications: Material: 304 stainless steel Head Shape: Flat Head Weight: Approx. 274g Size and Quantity: M4*8mm       25pcs M4*10mm     25pcs M4*12mm     25pcs M4*16mm     25pcs M4*20mm     25pcs M4*25mm     25pcs M4*30mm     25pcs M4*35mm     25pcs   Package Includes: 200 x Cross Self-tapping Screws  Note: Please allow 1-3mm error due to manual measurement. Thanks for your understanding. Package List