Product name: Hex bolt Standards: DIN/ ISO/ JIS/ ASME Grade: Class 4.8, 5.8, 8.8,10.9 / Grade 1,2,5,8,A,B,C, etc. Model: DIN931, DIN933, DIN960, DIN961, DIN601, DIN558, ISO4014, ISO4015, ISO4016, ISO4017, JIS1180, ASME B18.2.1 Material: Low carbon steel, carbon steel, stainless steel, brass Size: M3-M80; 1/4"-3" (all frequent sizes) Finish: Plain, Black, Zinc Cr+3, Yellow Zinc Cr+6, H.D.G., Dacromet, etc. FOB Port: Shanghai ABOUT US: Kingpluse Industry is a fasteners and hardware manufacturer, as well as an exporter with a wide range of industrial products located in Shanghai.We have advanced production facility, abundant technical forces and complete quality assurance system.We can produce various kinds of nuts. More information:Www.Kp-industry.Com