镀镍低碳钢平头机器螺丝
nickel-plated mild steel countersunk head machine screw
镀镍低碳钢圆头机器螺丝
nickel-plated mild steel round head machine screw
镀锌平头机器螺丝
galvanized MS countersunk head machine screw
镀锌圆头机器螺丝
galvanized mild steel round head machine screw
半沉头机器螺钉
oval countersunk fillister head machine screw
软钢平头机器螺丝
mild steel countersunk head machine screw
铁圆头机器螺丝
mild steel round head machine screw
园头机器螺丝带手拧螺母
round-head machine screw with grommet nut
镀黄铜平头软钢机器螺丝
brass-plated mild steel countersunk head machine screw
镀黄铜圆头软钢机器螺丝
brass-plated mild steel round head machine screw
镀锌沉头木螺丝
galvanized mild steel countersunk head wood screw
镀锌螺丝钉
galvanized mild steel drive screw
突头机器螺钉
raised head machine screw