GB823,gb823开槽盘头螺钉

5 304不锈钢圆头十字螺丝盘头gb823小头螺钉*3x4ex5x6x16
5m3m4m5m6小圆头螺钉小头螺丝gb823
p《十字槽圆柱头螺钉》gb/t 822-2000:2001-02-01实施,代替gb/t 823
厂家供应不锈钢gb823半圆头加减槽全牙螺钉 十一字小盘头螺丝
gb823不锈钢304 十字小盘头螺丝钉十字小圆头螺栓m5*6~50 10只