® Thread Turning Inserts ISO - metric EXTERNAL INTERNAL Pitch L I.C. Ordering Code X Y Ordering Code X Y mm in Right Hand Left Hand Right Hand Left Hand 3.5 22 1/2 22 ER 3.5 ISO 22 EL 3.5 ISO 1.6 2.3 22 IR 3.5 ISO 22 IL 3.5 ISO 1.6 2.3 4.0 22 1/2 22 ER 4.0 ISO 22 EL 4.0 ISO 1.6 2.3 22 IR 4.0 ISO 22 IL 4.0 ISO 1.6 2.3 4.5 22 1/2 22 ER 4.5 ISO 22 EL 4.5 ISO 1.7 2.4 22 IR 4.5 ISO 22 IL 4.5 ISO 1.6 2.4 5.0 22 1/2 22 ER 5.0 ISO 22 EL 5.0 ISO 1.7 2.5 22 IR 5.0 ISO 22 IL 5.0 ISO 1.6 2.3 5.5 22 1/2 22 ER 5.5 ISO 22 EL 5.5 ISO 1.7 2.6 22 IR 5.5 ISO 22 IL 5.5 ISO 1.6 2.3 6.0 22 1/2 **22 ER 6.0 ISO **22 EL 6.0 ISO 1.9 2.7 22 IR 6.0 ISO 22 IL 6.0 ISO 1.6 2.4 5.5 22U 1/2U 22U ER/L 5.5 ISO 2.3 11.0 22U IR/L 5.5 ISO 2.4 11.0 6.0 22U 1/2U 22U ER/L 6.0 ISO 2.6 11.0 22U IR/L 6.0 ISO 2.1 11.0 5.5 27 5/8 27 ER 5.5 ISO 27 EL 5.5 ISO 1.9 2.7 27 IR 5.5 ISO 27 IL 5.5 ISO 1.6 2.3 6.0 27 5/8 27 ER 6.0 ISO 27 EL 6.0 ISO 2.0 2.9 27 IR 6.0 ISO 27 IL 6.0 ISO 1.8 2.5 8.0 27U 5/8U 27U ER/L 8.0 ISO 2.4 13.7 27U IR/L 8.0 ISO 2.4 13.7 12.0 33U 3/4U 33U ER/L 12.0 ISO 2.5 16.5 33U IR/L 12.0 ISO 3.5 16.9 ** Special holder required Order example: 22 IR 3.5 ISO BMA For small bore threading see page A06-13 Type B Ground profile with sintered chip-breaker EXTERNAL INTERNAL Pitch L I.C. Ordering Code X Y Ordering Code X Y mm in Right Hand Right Hand 0.5 11 1/4 11 IR B 0.5 ISO 0.6 0.6 0.75 11 1/4 11 IR B 0.75 ISO 0.6 0.6 0.8 11 1/4 11 IR B 0.8 ISO 0.6 0.6 1.0 11 1/4 11 IR B 1.0 ISO 0.6 0.6 1.25 11 1/4 11 IR B 1.25 ISO 0.8 0.9 1.5 11 1/4 11 IR B 1.5 ISO 0.8 0.9 1.75 11 1/4 11 IR B 1.75 ISO 0.8 0.9 2.0 11 1/4 11 IR B 2.0 ISO 0.8 0.9 0.8 16 3/8 16 ER B 0.8 ISO 0.6 0.6 1.0 16 3/8 16 ER B 1.0 ISO 0.7 0.7 16 IR B 1.0 ISO 0.6 0.7 1.25 16 3/8 16 ER B 1.25 ISO 0.8 0.9 16 IR B 1.25 ISO 0.8 0.9 1.5 16 3/8 16 ER B 1.5 ISO 0.8 1.0 16 IR B 1.5 ISO 0.8 1.0 1.75 16 3/8 16 ER B 1.75 ISO 0.9 1.2 16 IR B 1.75 ISO 0.9 1.2 2.0 16 3/8 16 ER B 2.0 ISO 1.0 1.3 16 IR B 2.0 ISO 1.0 1.3 2.5 16 3/8 16 ER B 2.5 ISO 1.1 1.5 16 IR B 2.5 ISO 1.1 1.5 3.0 16 3/8 16 ER B 3.0 ISO 1.2 1.6 16 IR B 3.0 ISO 1.1 1.5 Order example: 16 IR B 1.5 ISO BMA For carbide grade and cutting speed see page A04-2 and 3 A01-8