These slotted flat head machine screws are crafted from high-quality zinc-plated steel, ensuring durability and resistance to corrosion. Perfect for a variety of applications, they provide a secure and reliable fastening solution for your projects. With a length of 1-1/2 inches and a diameter of 1/4-20 inches, this pack of five screws is ideal for both industrial and home improvement tasks, offering precision and strength where it's needed most.