Gerard Daniels carries a diverse selection of screws with and without washers in numerous sizes, lengths, and materials. These sheet metal screws are used in the installation process of mechanical insulation applications, for example in metal jacketing. We offer screws in the following alloys: SS-304, SS-410, SS-321, and Zinc Coated. These screws come in two primary point styles: Self-Drilling and Self-Tapping. We package our screws in quantities of 1000 per bag for easy distribution.