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Factory Customized 10.9 Grade ISO4014 Hexagon Bolt with ISO4013 Nut and En14399-6 Washer Black Phosphating Set Bolt and Nuts New Design, Find Details and Price about Phosphating Black Bolt Phosphated Black Bolt from Factory Customized 10.9 Grade ISO4014 Hexagon Bolt with ISO4013 Nut and En14399-6 Washer Black Phosphating Set Bolt and Nuts New Design - Shanghai Gentle Fasteners Technology Co.,Ltd.