grade 8.8 bolt specification: 1Materials:Carbon steel 2Size:M24*80,27*130,30*270 ... ,Dacro 4Certificate:ISO9 Different types of grade 8.8 bolt specification Details of the product:1Materials: 1045, 45#, 40Cr, 35CrMoA, Q345D ... Welcome your visit! Different types of grade 8.8 bolt specification