The 1/2UNFx4 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 both professional and DIY projects. The countersunk head design allows for a flush finish, enhancing the aesthetic appeal of your work while ensuring a secure fit. With their robust construction, these screws are perfect for use in demanding environments, offering peace of mind and long-lasting performance. Features: Surface Treatment: Plain Length: 4in Grade: 10.9 Driving Features: Hexagon Socket Thread Size: 1/2 Material: Alloy Steel Thread: UNF Head Shape: Counter Head Applications: - Ideal for securing metal components in machinery and equipment. - Suitable for use in construction projects requiring high-strength fastening.