Machine Pins Material: Brass Plating: Tin or Gold Socket pins/ Males pins, Spring pins etc Machine pins, Pin receptacle, PCB Pins etc.Material ; Brass, phosphor copper ,beryllium copper,aluminium,Ferrum,steel ect . process range dimension :cutting hole diameter: 0.40~20.0mmoutside pin diameter : 0.25~35.0mmPin length: 2.00mm~150mm Machine pins Pin receptacle Printed circuit pins PCB Pins