... :zp,black,hot dip.. 3.size:M8-M48 4.grade:4.8,8.8,10.9,12.9 hexagon bolt, high strength bolt ... , wheel parts, high tensile hex bolt Certificate: ISO9001:2000High Quality Strengthen: Grade ... pitch: 1.56mm, 2.0mm, 3.0mmFinishing: zinc plated, phosphated, black Oxide...Outer packing: standard neutral carton box fastened with pallet ...