hCWhCW T9225AH7025 T9125AH725 AH7025GH130 AH725 AH905 GH130 NS9530 GradeInsertExt. ToolholderInt. ToolholderThreadingGroovingMiniature toolMilling cutterEndmillDrilling toolTooling SystemUser's GuideIndex DTRProfilingandundercutting A RE 7˚ INSL Ref. B P SteelMStainlessKCast iron C N Non-ferrous S Superalloys : First choice H Hard materials : Second choiceCoatedCermetDesignationSeatsizeCW±0.05REINSLhD DTR3-150 3 3 1.5 z z z z z z z 20 5DTR4-200442zzzzzzz205DTR5-250552.5zzzzzzz255.5E DTR6-300 6 6 3 z z z z z 25 5.5 DTR8-400 8 8 4 z z z z z 30 6.7 z: Line up F DTIU Profiling and undercutting (for high precision) RE G 7˚ INSL Ref. P Steel H M Stainless K Cast iron N Non-ferrousSSuperalloysHHard materials : First choice: Second choice I Coated Designation SeatsizeCW±0.02 REDTIU300-150331.5zzz INSL h205 J DTIU400-200 4 4 2 z z z 20 5 DTIU500-250 5 5 2.5 z z z 25 5.5 DTIU600-300 6 6 3 z z z 25 5.5z: Line up K L M Reference pages: Toolholders → F168 - F169, Standard cutting conditions → F183 Tungaloy F177