The present invention relates to a fixed rod set for a machine tool, which comprises a rod body and a tool head holder. The rod body is radially provided with a first flange extending along the length of the rod body, and the first flange defines a passage. The tool head base includes a working portion and a connecting portion, the connecting portion is radially provided with a second flange, one end of the connecting portion is sleeved with one end of the rod body, the first flange and the second convex portion The edge of the groove wall is phased.本創作關於一種工具機用之固定桿組，其包括一桿體及一工具頭座。該桿體徑向設有一第一凸緣，該第一凸緣沿該桿體之長度方向延伸，該第一凸緣圍構有一通道。該工具頭座包括一工作部與一連接段，該連接段徑向設有一第二凸緣，該連接段之一端與該桿體之一端相套接，該第一凸緣與該第二凸緣之槽壁係相卡抵。
