... .2.2,DIN6330,DIN6334,ASME B18.2.2,BS916,DIN 439,DIN 936,ISO4035,DIN 971,ISO 8673,ISO 8675,etcNuts Size Metric ... if we have available tool.C. Quality control systems Quality Certificate: ISO9001:2008, ISO14001:2004Inspection quality system:ISO standard, 100% Whole ...