Threading TN6010––– TN6025363655836365653636559 THM––– TopThread™ Threading Inserts 30° 30° P ⅷ ⅷ M ⅷ ⅷ ⅷ first choice K ⅷ ⅷ ࠗ 90° 1°47´ ࠗ alternate choice N ࠗ ࠗ ⅷ API Round S ⅷ ⅷ ⅷ H ࠗ „NDC-RD insert catalogue number RC E size TPI TPF right hand NDC38RDR75 0,43 3,18 3 8 .750 left hand NDC310RDL75 0,36 3,18 3 10 .750 NDC38RDL75 0,43 3,18 3 8 .750 F20 widia.com