Indexable Drills Top Cut 4™ Catalogue Numbering System The guide below provides an example of how to select the Top Cut 4 tool body and accompanying inserts for a stable steel drilling application. Metric Body TCF 250 R 3 SL 32 M D Tool Family Diameter Right-Hand Length Shank Style Shank Size Metric Insert Size Top Cut 4 Metric =3 digits Cutting Diameter SL =RatioSide Lock (e.g. 250 =25mm) L/D =3xD Adaptor Inch = 4 digits (e.g. 2500 = 2.5") Periphery Insert TCF 08 03 08 D P V34 WU25CH Tool Family Size Insert Insert Insert Size Insert Insert Grade Top Cut 4 In-Circle D1 Thickness CornerRadius Positioning GeometryC= Central P= Periphery Insert Geometry – V34 for steel or cast iron or V36 for stainless steel and long chipping steel. Insert Guide for Grades W U 25 C H W U 40 P H W PK 10 C H WIDIA™ Material Toughness Coating Application Range Range P = PVD H= U = UniversalP = SteelChoose highnumbers fortoughnessC = CVD Holemaking K = Cast Iron in stable conditions, low numbers for high wear resistance at continuous cuts. V6 widia.com