GBT70.1,

法士威现货gb70.1国标圆柱头内六角螺栓304不锈钢全螺纹螺丝
圆柱头内六角螺钉gb/t70.1(现货库存)
1-2000 (iso 4762-1997)(gb 70-1985) 内六角圆
gb70.1 8.8级杯头内六角螺丝/螺栓/圆柱头内六方螺钉m4m5m6m8
gb70.1半牙12.9级圆柱头内六角螺丝全牙杯头内六方螺栓螺钉m3m4m5