Combidex Catalog - National

American UN (Unified)UNC, UNF, UNEF, UNSInternal(Ground Profile with Sintered Chip-breaker) S TypeInsert Size Pitch Ordering Code Dimension(mm)L IC TPI Right Hand X Y16 3/8” 24 16 IR S 24 UN ... 0.7 0.820 16 IR S 20 UN ... 0.8 0.918 16 IR S 18 UN ... 0.8 1.016 16 IR S 16 UN ... 0.9 1.114 16 IR S 14 UN ... 1.0 1.212 16 IR S 12 UN ... 1.1 1.410 16 IR S 10 UN ... 1.1 1.58 16 IR S 8 UN ... 1.2 1.6U StyleInsert Size Pitch Ordering Code Dimension(mm)L IC TPI Right Hand / Left Hand X Y8U 3/16”U 13 08 UI R/L 13 UN... 1.0 4.012 08 UI R/L 12 UN... 0.9 4.011 08 UI R/L 11 UN... 0.9 4.722U 1/2”U 4.5 22 UI R/L 4.5 UN... 2.4 11.04 22 UI R/L 4 UN... 2.4 11.027U 5/8”U 3 27 UI R/L 3 UN... 2.7 13.7V StyleInsert Size Pitch Ordering Code Dimension(mm)L IC TPI Right Hand Left Hand X Y T27V 5/8”V 4 27V IR 4 UN ... 27V IL 4 UN ... 1.0 3.3 63 27V IR 3 UN ... 27V IL 3 UN ... 1.0 4.3 8MultitoothPitch L IC Number Ordering Code X Y Recom. No.of Teethof PassesTPI mm inch Right Hand mm16 16 3/8” 2 16 IR 16 UN 2M ... 1.5 2.3 316 22 1/2” 3 22 IR 16 UN 3M ... 2.5 4.0 212 2 22 IR 12 UN 2M ... 2.2 3.4 312 3 22 IR 12 UN 3M ... 3.3 5.3 28 27 5/8” 2 27 IR 8 UN 2M ... 3.1 4.9 415