High-Quality Material: These screws are made of carbon steel, treated with carburizing and black oxidation processes, ensuring they have sufficient strength and appropriate toughness. They are corrosion-resistant and durable, offering reliability in various applications. Thread Type and Size: Featuring metric threads with dimensions of M2 x 3mm, these screws have a diameter of 4mm and are equipped with flat-head Phillips slots, providing compatibility with a wide range of devices and components. Versatile Applications: Suitable for use in a variety of devices and components, including WiFi cards, M.2 SSD NVMe heatsinks, laptops, multi I/O boards, network cameras, keyboards, and even some palm rests and base plastics. Cross-Slot Drive Design: Utilizing a cross-slot drive design, these screws offer even force distribution, ensuring secure fastening without slipping. This design choice enhances ease of use and provides a reliable locking mechanism for various installations. Convenient Packaging: Each set includes 200 pcs screws, providing an ample supply for multiple projects or tasks. The abundance of screws ensures users have a sufficient quantity on hand for their assembly or repair needs., Manufacturer: OTOTEC