... 1-2mm 3) Standard:GB/T1527-199,DIN7340 Copper Bushing/sleeve/metal pin bushingFeatures:1) name:rivets, ... for the trades of precise instruments, electron and electronic appliances, and socket connectorsOur company is a manufacturer to specialize Copper Capillary, Drawn Copper Tube,Copper ... Electric Brush, Antenna, Electric Brush, etc. Copper Bushing/sleeve/metal pin bushing for precise instruments,etc