left-hand thread tap

基本解释左旋螺纹丝锥

网络释义

1)left-hand thread tap,左旋螺纹丝锥2)left-hand thread manual tap,左旋螺纹手控丝锥3)left-spiral flute tap,左螺旋槽丝锥4)right hand thread tap,右旋螺纹丝锥5)LHT,左旋螺纹6)taped thread,丝锥螺纹