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