® Thread Turning Inserts Chasers API Buttress Casing PitchTPI L TaperIPF EXTERNALOrdering Code X Y T A No. ofTeeth 5 20 0.75 20 ER 5 BUT 0.75R 15.692 4.84 4.76 6° 3 5 20 0.75 20 ER 5 BUT 0.75F 15.875 2.3 4.76 6° 4 Order example: 20 ER 5 BUT 0.75F BMA Chasers OTTM Buttress Casing PitchTPI L TaperIPF EXTERNALOrdering Code X Y T A No. ofTeeth 5 20 0.75 20 ER 5 OTTM 0.75R 15.692 4.79 4.76 6° 3 5 20 0.75 20 ER 5 OTTM 0.75F 15.909 2.25 4.76 6° 4 Chasers to be used with compatible holders on the market Order example: 20 ER 5 OTTM 0.75F BMA For carbide grade see page A04-2 A01-41