® Thread Turning Inserts NPT EXTERNAL INTERNAL Pitch L I.C. Ordering Code Ordering Code X Y TPI in Right Hand Left Hand Right Hand Left Hand 27 6 5/32 ULTRA MINIATURE  *06 IR 27 NPT *06 IL 27 NPT 0.6 0.6 27 8 3/16 *08 IR 27 NPT *08 IL 27 NPT 0.6 0.6 18 8 3/16 MINIATURE  *08 IR 18 NPT *08 IL 18 NPT 0.6 0.6 27 11 1/4 11 ER 27 NPT 11 EL 27 NPT 11 IR 27 NPT 11 IL 27 NPT 0.7 0.8 18 11 1/4 11 ER 18 NPT 11 EL 18 NPT 11 IR 18 NPT 11 IL 18 NPT 0.8 1.0 14 11 1/4 11 ER 14 NPT 11 EL 14 NPT 11 IR 14 NPT 11 IL 14 NPT 0.8 1.0 27 16 3/8 16 ER 27 NPT 16 EL 27 NPT 16 IR 27 NPT 16 IL 27 NPT 0.7 0.8 18 16 3/8 16 ER 18 NPT 16 EL 18 NPT 16 IR 18 NPT 16 IL 18 NPT 0.8 1.0 14 16 3/8 16 ER 14 NPT 16 EL 14 NPT 16 IR 14 NPT 16 IL 14 NPT 0.9 1.2 11.5 16 3/8 16 ER 11.5 NPT 16 EL 11.5 NPT 16 IR 11.5 NPT 16 IL 11.5 NPT 1.1 1.5 8 16 3/8 16 ER 8 NPT 16 EL 8 NPT 16 IR 8 NPT 16 IL 8 NPT 1.3 1.8 * Available only in BXC and BMA grades Order example: 16 ER 14 NPT MXC For small bore threading see page A06-16 Type B Ground profile with sintered chip-breaker EXTERNAL INTERNAL Pitch L I.C. Ordering Code Ordering Code X Y TPI in Right Hand Right Hand 18 11 1/4 11 IR B 18 NPT 0.8 0.9 18 16 3/8 16 ER B 18 NPT 16 IR B 18 NPT 0.8 1.0 14 16 3/8 16 ER B 14 NPT 16 IR B 14 NPT 0.9 1.2 11.5 16 3/8 16 ER B 11.5 NPT 16 IR B 11.5 NPT 1.1 1.5 8 16 3/8 16 ER B 8 NPT 16 IR B 8 NPT 1.3 1.8 Order example: 16 IR B 11.5 NPT BMA For carbide grade and cutting speed see page A04-2 and 3 A01-18