Threading Insert for Oil Pipe Threading Insert for Oil Pipe Helter Series API Round Inserts Parallelogram Series API Round Inserts Type Designation Pitch( tpi )I.C H L B C d Y Picture Type Designation Pitch( tpi )I.C H L B C d Y 0 Picture R8NR1.4S15-Q 8 15.875 15.700 3.100 5.00 4 9° R8ER2.5P19 8 19.000 18.4 5.950 6.35 9.5 8 10° 80° L m R10ER2.5P19 10 19.000 18.4 5.950 6.35 9.5 8 10° 80° x CD 3 Q) 3 R10NR1.5S15-Q 10 15.875 15.750 2.500 5.00 4 9° R8NR2.5P19 8 19.000 18.4 5.950 6.35 9.5 8 10° 80° R810NR2.5P19 8 19.000 18.4 5.950 6.35 9.5 8 10° 80° CD I T> 3 Q) c H I.C B 0 3 R8NR1.7S25 8 25.000 15.715 3.700 5.00 4 10° Q) 1 Prism Series API Round Inserts Type Designation Pitch( tpi ) A H L B a Picture R8ER1.2L40 8 40.000 7.7 7.850 13.64 8° R10NR1.8S25 10 25.000 15.490 2.500 5.00 4 10° i m R10ER1.2L40 10 40.000 7.7 7.200 12.92 8° A X 0 O 303 a A Biforate SeriesAPI Round Inserts Type Designation Pitch( tpi ) A H L B C d E Picture R 8 ER 2.3D 24 8 24.000 12 10.340 6.4 15 4.70 API Round Inserts for PMC Machine Tools (USA) m R10ER 2.3 D 24 10 24.000 12 6.850 6.4 15 4.70x 0 Type Designation Pitch( tpi )A H L B d a A Picture O) A R8E R1 . 3S1 5T-P3 . 1 8 15.930 14.700 7.720 5.185 4° p i R8E R1 . 3S1 5T-P3 . 2 8 15.930 14.700 6.670 5.185 4° i R8NR2.4D24 8 24.000 12.4 10.340 6.4 15 4.70 m X R8E R1 . 3S1 5T-P3 . 3 8 15.930 14.700 5.610 5.185 4° CD x=3CD* Q o' B A R8NR1.7S25-P 8 25.4 15.715 3.700 5.185 4 7°30 3 0 J 3 R8NR1.5D24 8 24.000 14.85 9.500 5 8 4.86 4 _LQ) R8NR1.7D24 8 24.000 14.85 3.400 5 8 4.86 4 CD x 3CD R10NR1.7D24 10 24.000 14.85 7.400 5 8 4.86 4 - B A C