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Nitrided color hex flange nuts
• Material: GR1,GR2,GR5
• Size:M3-M48
• Standard: DIN6923/JIS B 1190/ ISO 4161/ ANSI 18.2.4.4M
• Production method: Nitrided, Oxidized Application: Bicycle, motorcycle,and automobile,racing car,yacht,sports and electronics,pharmacy,petroleum etc