... , 304, 316) 2).Head: Hexagon/Pan/CSK Stainless steel self drilling screws with painted head :Suzhou Metal Hardware Co., Ltd ... painted head: Use Fluorocarbon Baking Varnish to color it.SUS410 self drilling screws apply to stainless structures and steel structrues, ... amd SUS304 and SUS316 self drilling screws apply to aluminium structrues and PVC. Customers ...