... Description: DIN 7504 Self Drilling Screw with EPDM washer Head Type: Hex Washer, Hex, Pan, Bugle, CSK(Flat), Wafer, TrussDrive Type: Hex ... , black, green), black oxide, nickel plated, chrome plated, Cr+3, hot dip galvanized, brass platedScrews for automotive and electronic industries.