These Brass Hex Cap Screws come with plain finishing having external hex drive. They are designed to withstand corrosion and ensure excellent thermal and electrical conductivity. The external hex drive has flat sides to allow a wrench to make grip for turning the screw from the side. These threaded fasteners are designed with thick hex-shaped heads to be used with threaded nuts or above the tapped hole. These Brass Hex Cap Screws are designed with a washer face to provide large bearing surface.