Size and quantity - M4 x 16 mm (100 pieces) | Drive type: PH2 A2 stainless steel screws for indoor and outdoor use. These metric screws provide reliable performance with minimal slippage during installation. Suitable for direct fastening into wood, soft metals, aluminum, and plastic materials. Offers high strength, resistance to deformation, and durability. Flat head with cross recess: The flat head design allows for a flush or below-surface fit, ideal for tight spaces. Standard cross recess ensures smooth driving with reduced slippage, enabling quick and efficient installation. Sharp thread design: Features deep threading for faster insertion, improved holding power, and enhanced work efficiency. Provides strong grip for secure fastening and repair applications. Sheet metal screws resemble wood screws in shape but are made from more durable material and feature a specialized tip for penetrating sheet metal. Pre-drilling or marking the installation point with a punch is recommended for easier driving.