gb823,GB845

订做加工gb823标准十字槽小盘头螺钉 配套gb818十字槽盘头螺丝
gb823-88螺丝
机螺丝系列:gb818-85,gb818-76,gb819,gb820,gn822,gb823-88,gb65
十字小盘头螺钉gb823
小盘头十字槽圆头螺丝机螺钉304不锈钢gb823精密小圆头螺钉m6m8