... Class 4.8/6.8/8.8/10.9/12.9 Carbon Steel Hex Bolt 1.Material:Carbon Steel ... ISO9001 Class 4.8/6.8/8.8/10.9/12.9 Carbon Steel Hex BoltWe are professional manufacturer of fasteners ... ,5.6,5.8,6.8,8.8,10.9,12.96)finish:zinc, black, plain,H.D.G7) ... material: Carbon Steel8)thread:BSW,BSF,UNC,UNF etc.9)certifications: ISO9001:200010)use: Our products are widely used ... 4.8/6.8/8.8/10.9/12.9 Carbon Steel Hex Bolt