® Thread Turning Inserts Chasers API Buttress Casing PitchTPI L TaperIPF EXTERNALOrdering Code X Y T A No. ofTeeth 5 15.75 0.75 15.75 ER 5 BUT 0.75 3T 15.875 2.3 4.76 10° 3 PitchTPI L TaperIPF INTERNALOrdering Code X Y T A No. ofTeeth 5 15.875 0.75 15.875 IR 5 BUT 0.75 3T 15.75 2.5 4.76 10° 3 Order example: 15.75 ER 5 BUT 0.75 3T BMA Chasers OTTM Buttress Casing PitchTPI L TaperIPF EXTERNALOrdering Code X Y T A No. ofTeeth 5 15.75 0.75 15.75 ER 5 OTTM 0.75 3T 15.75 3.0 4.76 6° 3 PitchTPI L TaperIPF INTERNALOrdering Code X Y T A No. ofTeeth 5 15.875 0.75 15.875 IR 5 OTTM 0.75 3T 15.875 2.5 4.76 10° 3 Chasers to be used with compatible holders on the market Order example: 15.75 ER 5 OTTM 0.75 3T BMA For carbide grade see page A04-2 A01-42