الوصف

Standards:GB/T ***0,GB/T ***1,GB/T ***2,GB/T ***3,GB/T ***5,GB/T ***6
                    ISO ***4,ISO ***6,ISO ***7,ISO ***8,ISO ***5,ISO ***6
                    DIN **8,DIN **1,DIN **1,DIN **3,DIN **0,DIN **1
                    A*6,A**0
                    BS **6
                   JIS B ***0
Strength Grade: 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 9.8, *0.9, *2.9
Size: M6~M*2;1/4"to 2"
Surface treatment: Plain, Black, Zinc Plated,HDG,etc.