宁波市镇海区贵驷朝阳五金螺钉厂
Ningbo Zhenhai Guisi Zhaoyang Hardware Screw Factory
宁波市镇海区贵驷朝阳五金螺钉厂
Hexagon socket thin head cap screws (DIN 7984 - 2009)
grade, rigidity Grade 8.8 (HRC22~34)
Coating black oxide coating