TurningMillingDrillingTechnicalInformationIndex Threading System code – tool holders A S W R 20 20 K 16 (B) 1 2 3 4 5 6 7 8 Clamping system Application Code Description Code Description W External thread tool holder S Screw clamping N Internal thread tool holder C Top clamping B 1 2 Cutting direction Shank height h [mm] Shank width b [mm] R h b C L 3 4 5 Shank length L [mm] Insert size [mm] Code Height 11 6,35 L 16 9,525 Code L 22 12,7 H 100 K 125 D M 150 P 170 Q 180 R 200 S 250 T 300 6 7 E Holder for thin thread inserts(B type) 8 A 438