... : Blued galv. exterior screws, blued galv., screws with washer The screws we can produce include: Blued galv. exterior screws, blued galv., screws with washer head ... Philips head drywall screws with fine thread, coarse thread drywall screws, coarse thread drywall screws (black phosphated), color galv., screws with self-drilling point ...