Hexagon flange bolts din 6921. steel grades: 8.8, 10.9 finish: self, black, bright zinc, hot dip galvanized
China manufacturer high quality lifting eyebolt swivel eye bolt with nut. ... 904l stainless steel hex nut bolt manufacturing process. country/region: china. ... china fastener manufacturer hardware cold forging grade 8.8 10.9 12.9 din604 flat countersunk nib bolts and nuts.
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