... years experience in special fastener Name: hex nut with internal thread and castle screw Ability for the material of this ... dip galvanizing,etc Flame plating Light oil,spray coating,electrophoretic coating,etc Polishing Grinding and polishing,etc,except mirror finishAbility ... .01/200mm How about the packing details?Plastic bags inside,then carton(normally32cm*23cm*13cm),then fumigation free pallets ...