® Thread Turning Inserts Chasers API Round PitchTPI L TaperIPF EXTERNALOrdering Code X Y T A No. ofTeeth 10 15.75 0.75 15.75 ER 10 API RD 3T 15.435 4.4 4.76 6° 3 8 15.75 0.75 15.75 ER 8 API RD 3T 15.84 4.4 4.76 6° 3 Order example: 15.75 ER 10 API RD 3T BMA PitchTPI L TaperIPF INTERNALOrdering Code X Y T A No. ofTeeth 10 15.75 0.75 15.75 IR 10 API RD 4T 15.75 5.7 4.76 10° 4 8 15.875 0.75 15.875 IR 8 API RD 4T 15.75 4.2 4.76 10° 4 Chasers to be used with compatible holders on the market Order example: 15.75 IR 10 API RD 4T BMA For carbide grade see page A04-2 A01-40