6.3mm 14g TEK ROOFING SCREWS HEX HEAD + SEALING WASHER + COVER CAPS + DRIVER BIT | eBay
12 Long Life Metal Roofing Screws (250 Count) -1.5" Long Shaft-Metal to Wood- OSB Replacement Screws -Domed Cap Screw Head EPDM Washer- Free 5/16” Hex Bit Driver! (250, Black): Amazon.com: Industrial & Scientific