tapping screw thread是什么意思_tapping screw thread中文

tapping screw thread中文什么意思

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Cross recessed raised countersunk head drilling screws with tapping screw thread
十字槽半沉头自钻自攻螺钉
Drilling screws with tapping screw thread . mechanical and functional properties
自钻自攻螺钉.机械和功能性能
Drilling screws with tapping screw threads - mechanical and functional properties
自钻自攻螺钉.机械和功能特性
Subland twist drills with cylindrical shanks for holes prior to tapping screw threads
攻丝前先钻孔的柱柄阶梯麻花钻
Subland twist drills with cylindrical shanks for holes prior to tapping screw threads
攻丝前钻孔用圆柱柄阶梯麻花钻

tapping screw thread中文什么意思