... ;5.8;8.8 3.Material:Carbon steel 4.Package:paper box;jute bag;wood case Connecting bolt M16*45(46 or 47 ... standard),EU, USA, AS/NZS, etc Features: Great corrosion resistant, high intensity, long and durable Certificate:GB/T19001-2000---ISO9001:2000 ... Garden Building, Lingshanwei Town, Jiaonan City, Qingdao, ChinaPostcode:266427 DIN Carbon steel bolt and nuts