Feature diverse range of drives, head patterns and materials to meet specific requirements. Specially designed for plastics. Feature slightly dwindled point and twin lead threads, so as to execute hassle free screw installation. This screw can drive at double the rate of a pitch single lead. Its thread enhances grip, thereby lessening pull-out and stripping. The design improves the failure torque in plastic objects. - YUHUANG Fastener CO.,LTD.