304不锈钢弹性轴卡外卡轴用挡圈卡环卡扣弹性卡扣C型卡簧GB894.1
304不锈钢圆柱头内六角螺丝M2M3M4M5M6M8M10-M20螺钉螺栓GB/T70.1
GB/T70.1全牙12.9级圆柱头内六角螺丝杯头内六方螺钉M3M4M6M8M16
304/316不锈钢GB97.1超薄金属平垫片垫圈加大加厚DIN125 M1.6M2M3
GB/T13681六角焊接螺母台阶有无点焊碰焊螺帽M3M4M5M6M8M10M14M20