The 1/2UNFx2.1/2 Socket Countersunk Head Screw (GR-10.9) from Qualfast is designed to provide reliable fastening solutions for a variety of applications. Crafted with high-quality materials, these screws ensure durability and strength, making them ideal for use in demanding environments. The countersunk head design allows for a flush finish, enhancing the aesthetic appeal of your projects while maintaining structural integrity. With their robust construction, these screws are perfect for both professional and DIY tasks, delivering performance you can trust. Features: Driving Features: Hexagon Socket Head Shape: Counter Head Thread: UNF Length: 2-1/2in Grade: 10.9 Surface Treatment: Plain Thread Size: 1/2 Material: Alloy Steel Applications: - Ideal for securing metal components in machinery and equipment assembly. - Suitable for use in construction projects requiring strong, durable fastening solutions.