... ASTM,GB,etc. 4Certificate:ISO9001:2008,SGS Fasteners grade8.8 Dacron special hex bolt with nut Details of the product:1Materials ... GB,etc. 4Grade: 8.85Surface: Darconment (Black, HDG, Zinc plated, Dacron etc.)6Proven technique & good quality.7Packaging: wooden box8We can produce ... : PackagingFactory viewTesting equipmentsWorkshop Welcome your visit! Fasteners grade8.8 Dacron special hex bolt with nut