please send me best price (CIF Istanbul Haydarpasa port by sea fraight) for attached nuts. All nuts must be 10 Grade and Black Dacromet coating. M18x1.5 10 Grade DIN 74361 H Type 50.000 pcs/year M20x1.5 10 Grade DIN 74361 H Type 10.000 pcs/year M22x1.5 10 Grade DIN 74361 H Type 10.000 pcs/year