Model no.: a490m Type: hexagon head Head style: hexagonal Grade: 10.9 Finish: black Surface treatment: black, zinc plated, h.D.G, dacromet, zinc yellow Sample: free Customer design: accept Trademark: sd Origin: ningbo, china Material: high strength steel Connection: common bolt Standard: ansi Application: building Raw material: carbon steel Heat treatment: yes Port: ningbo Torque coefficient: 0.110~0.150 Specification: a490m Hs code: 7318159090