Check the listing for details. M4x40mm Flat Head Phillips Drive Self Tapping Screws, 304, Silver, Pack of 25. Condition: New. Listed at 18.74 USD. [Material]: The screws are made of 304 stainless steel, resistant to rust and corrosion. Widely used in home, office appliances, and workplace fasteners, their robust nature ensures they can withstand a variety of home and commercial uses[Design]: The flat head provides a flush finish with your surfaces. Featuring a deep cross groove, these screws offer an exceptional grip with screwdrivers, minimizing the risk of stripping while enhancing torque during installation[Installation]: Our self-tapping screws eliminate the need for extensive pre-drilling. Create a guide hole close to the screw diameter for effortless installation, allowing you to save time and energy on your projects[Versatile Use]: Flat head screws are great for a variety of woodworking tasks and connections, making them a great addition to your toolbox.