Threading Inserts NPTF INTERNAL ANSI B 1.20.3-1976 B NPTF NUT B A A 30° 30° L L 90° 1°47' NPTF SCREW I.C. I.C. MULTITOOTH STANDARD STANDARD PITCH CATALOG NUMBER DIMENSIONS TPI RIGHT HAND LEFT HAND Lmm I.C. A B 27 NPTF 27 IR06 NPTF 27 IL06 06 4.00 0.7 0.5 27 NPTF 27 IR08 NPTF 27 IL08 0.7 0.6 08 5.00 18 NPTF 18 IR08 NPTF 18 IL08 0.7 0.7 27 NPTF 27 IR11 NPTF 27 IL11 0.7 0.8 18 NPTF 18 IR11 NPTF 18 IL11 11 6.35 0.8 1.0 14 NPTF 14 IR11 NPTF 14 IL11 0.8 1.0 27 NPTF 27 IR16 NPTF 27 IL16 0.7 0.8 18 NPTF 18 IR16 NPTF 18 IL16 0.8 1.0 14 NPTF 14 IR16 NPTF 14 IL16 16 9.525 0.9 1.2 11.5 NPTF 11.5 IR16 NPTF 11.5 IL16 1.1 1.5 8 NPTF 8 IR16 NPTF 8 IL16 1.3 1.8 MULTITOOTH PITCH TEETH CATALOG NUMBERRIGHTHAND ANVIL LTPImm DIMENSIONSI.C.A B 11.5 2 NPTF11.5 2M IR22 IS22M 22 12.70 2.4 3.4 31