... steel (410, 304, 316) 2).Head: Hexagon/Pan/CSK Stainless steel self drilling screws with painted head :Suzhou Metal Hardware Co., Ltd is ... Material: Stainless steel (410, 304, 316)2. Standard: DIN 75043. Head Code: Hexagon/Pan/CSK/Flat4. Drive Code: Square #2 or ... plate + steel frame; Steel frame + steel frame9. About screw painted head: Use Fluorocarbon Baking Varnish to color it.SUS410 self drilling ...