... :Carbon steel 2Size:M27*120 3Finish:Black 4Certificate:ISO9001:2008,SGS Fasteners gr4.8 black oxide hex bolt Details of the ... , GB, GOST, UNI, etc. 4Grade: 4.85Surface: Black, (Darconmet, HDG, Zinc plated, etc.)6Proven technique & good quality.7Packaging: Wooden box, ... .A., Canada, Cuba, Germany, Japan, Singapore, Malaysia and Africa and so on.Pictures:1.certificate:2. Various honorary certificates:3 ...