This set of 50 fully threaded hex cap screws measures 5/16\"-18 x 3/4\", and is made from durable stainless steel. The screw size is #3, with a system of measurement in inches. The material provides strength and reliability, making it suitable for a variety of applications. The brand is unbranded, but the quality is guaranteed. These screws are perfect for those in the business and industrial sectors who need reliable fasteners for their projects.