hex nuts M4-M30 experienced manufacturer supply ability:800tons/month Min ... Delivery: within 20 days & hex nut& Different kinds of nuts available& Thread size :,M4,M5,M6,M8,M10,M12,M16 ... ,M20,M24,M30& Plating type: yellow zinc, white zinc, nickel,black& Craft: cold forming& Standard: ... be supplied according to customers’ drawings or samples. hex nuts M4-M30 with yellow zinc plating