black screw This screw M1.4-M10-9-1-1 style screw has the the appearance of anti-rust treatment, durable and quality assurance Main specification of black screw: Applications: mobile phones, portable computers, a variety of plastic frames, communications, micro-motor, computer, electronic and electrical appliances, auto parts, etc.Material: 1010 carbon steel, 1018 carbon steel, 1022 carbon steel, ...