... 1-2mm 3) Standard:GB/T1527-199,DIN7340 Copper Bushing/sleeve/metal pin bushingFeatures:1) name:rivets, tubular rivets, brass rivets, ... standard and are widely used in precise instrument, electronicequipment, pin connector, pen, mechanical device etc.Especially our Brass Tubular ... , Antenna, Electric Brush, Antenna, Electric Brush, etc. Copper Bushing/sleeve/metal pin bushing for precise instruments,etc