Hello
I know tr30x6 from my period of training. We used to turn those threads with self-cut steels. Therefore, we used a cranked square steel bar with a square hole that was cross to the axis with HSS-square. It also should work today for milling in a modified form. I don’t know any manufacturers of such tools.
Regards, farmer
<b><!--fonto:Arial--><span style="font-family:Arial"><!--/fonto--><!--sizeo:6--><span style="font-size:24pt;line-height:100%"><!--/sizeo--><!--coloro:#0000FF--><span style="color:#0000FF"><!--/coloro--><i>Gruß farmer</i><!--colorc--></span><!--/colorc--><!--sizec--></span><!--/sizec--><!--fontc--></span><!--/fontc--></b><br /><br /><br /><br /><i><!--sizeo:4--><span style="font-size:14pt;line-height:100%"><!--/sizeo--><!--fonto:Arial--><span style="font-family:Arial"><!--/fonto--><!--coloro:#0000FF--><span style="color:#0000FF"><!--/coloro--><!--sizeo:4--><span style="font-size:14pt;line-height:100%"><!--/sizeo-->Hilfsbereitschaft, Gemeinsinn, Miteinander und Füreinander<!--sizec--></span><!--/sizec--><!--colorc--></span><!--/colorc--><!--fontc--></span><!--/fontc--><!--sizec--></span><!--/sizec--></i>