... FR-4 PCB board1-6 oz copper thickness0.2 mm hole size 0.1 mm minimun line width/space Our PCBs are used ... x 508mmHole Position Tolerance(CNC)+/-0.075mmHole Dimension Tolerance(CNC)PTH: +/-0.075mm, NPTH: +/-0.05mmOutline ToleranceCNC: +/-0.125mm, Punching: +/-0.15mmWarp & Twist0.70%Min ... .Surface FinishingHASL, Immersion Silver/Gold, Plate Gold, Gold Finger 1.0 mm board thickness pcb board