Stitch screws are primarily used in the construction industry for securing overlapping corrugated cladding and roof sheeting. They are designed to penetrate the sheet metal and create a secure connection to the underlying structure. EPDM bonded washers are primarily used in corrugated roofing or cladding applications to provide a reliable seal and protect against leaks. The EPDM rubber layer offers excellent weather resistance, chemical resistance, and vibration damping, making these washers ideal for outdoor environments. NSS is excited to be providing our industry leading quality products in convenient retail packaging. Products are available in Small and Medium Pouches, as well as Jars, and Buckets.