This is a custom brass terminal screw we supply to our electrical construction customer with an annual quantity of 30 million pieces. The thread diameter are 3.5mm and 4.5mm, length in 9.5mm and 11.5mm, using brass h63 material. Terminal screws are used extensively in building wiring for the distribution of electricity – connecting electrical outlets, luminaires and switches to the mains, and for directly connecting major appliances. The production capacity of one machine is 50,000pcs to 80,000pcs per day.