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材质：碳 钢、 级别： 4.8级、8.8级、10.9级、12.9级
不锈钢、 200系/304系
表面：（ROHS）发黑、镀白锌、彩锌、蓝白锌、黑锌、镀镍、镀铜、达克罗
产品规格：
M1.6*3,4,5,6,8
M2*3,4,5,6,8,10,12,14,16
M2.5*3,4,5,6,8,10,12,14,16
M3*3,4,5,6,8,10,12,14,16,18,20
M4*4,5,6,8,10,12,14,16,18,20,25,30
M5*5,6,8,10,12,14,16,18,20,25,30,35,40
M6*6,8,10,12,14,16,18,20,25,30,35,40
M8*8,10,12,14,16, 20,25,30,35,40
M10*10,12,14,16,20,25,30,35,40,45,50
M12*14,16,20,25,30,35,40,45,50,55,60
