十字槽沉头自攻自钻螺钉
Cross recessed countersunk head drilling screws with tapping screw thread
十字槽沉头自攻自钻螺钉
Cross Recessed Countersunk Head Drilling Screws With Tapping Screw Thread
十字槽沉头自攻自钻螺钉
Cross Recessed Countersunk Head Drilling Screws With Tapping Screw Thread