m6 m8螺纹内径标准?

316304不锈钢牙条丝杆通丝全螺纹螺杆m4m5m6m8m10m12m16m20m27

m6m8-m24mm 304不锈钢半牙螺栓外六角螺丝螺丝粗杆半螺纹半扣螺钉 m10

定制m6m8m10m12钢丝螺套螺纹护套正宗304不锈钢牙套修复牙螺丝套钢套

腾楠镀锌牙条丝杆通丝螺杆螺纹杆 m3m4m5m6m8m10m12m14m16m18m m10*1