... .hexagon head bolt, bolts for automobile 3.passed ISO 9001,ISO Ts16949 4. ... diameter,length according to request 1. bolts2.hexagon head bolt, bolts for automobile3.passed ISO 9001,ISO Ts169494.color,diameter,length ... head bolt,stud)We are majoring in producing the bolts with high intensity ,such as the grade 8.8,10.9 ... ,12.9,the bolts used in low temperature as well.And we can produce ...