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
hex socket countersunk head cap screw (DIN 7991 - 1986) 促销
grade, rigidity Grade 8.8 (HRC22~34)
Coating electroplating
规格从M6-M20 长度从20-200 等级从8.8-10.9