THREADING IC228 IC50M IC250 IC08 IC508 IC808 IC908 IC1007IC908 IR/L-NPTInternal NPT PDY PDXRE (National Pipe Threads) Full Profile Laydown lNSL Threading Inserts for Steam, Gas and Water Pipes IC Internal left-hand shown NUT Dimensions Tough 1 Hard 30° 30° 90° 1°47' SCREW Designation IC TPI(3) RE INSL PDY PDX CICT(4) 06IR 27 NPT 4.00 27.0 0.04 6.88 0.6 0.6 1 • 08IR 18 NPT 5.00 18.0 0.06 8.24 0.6 0.8 1 • • 11IL 18 NPT 6.35 18.0 0.06 11.00 0.8 1.0 1 • 11IR 18 NPT 6.35 18.0 0.06 11.00 0.8 1.0 1 • • 11IRB 18 NPT 6.35 18.0 0.06 11.00 0.8 1.0 1 • 11IL 14 NPT 6.35 14.0 0.07 11.00 0.8 1.0 1 • 11IR 14 NPT 6.35 14.0 0.07 11.00 0.8 1.0 1 • • • 16IR 27 NPT 9.52 27.0 0.04 16.49 0.7 0.8 1 • 16IR 18 NPT 9.52 18.0 0.06 16.49 0.8 1.0 1 • 16IRM 14 NPT (1) 9.52 14.0 0.05 16.49 0.9 1.2 1 • • • • 16IRB 14 NPT (1) 9.52 14.0 0.07 16.49 0.9 1.2 1 • 16IL 14 NPT 9.52 14.0 0.07 16.49 0.9 1.2 1 • 16IR 14 NPT 9.52 14.0 0.07 16.49 0.9 1.2 1 • • • • 16IRM 11.5 NPT (1) 9.52 11.5 0.09 16.49 1.1 1.5 1 • • • • 16IRB 11.5 NPT (1) 9.52 11.5 0.09 16.49 1.1 1.5 1 • 16IL 11.5 NPT 9.52 11.5 0.09 16.49 1.1 1.5 1 • • 16IR 11.5 NPT 9.52 11.5 0.09 16.49 1.1 1.5 1 • • • 16IRM 8 NPT (1) 9.52 8.0 0.12 16.49 1.3 1.8 1 • • • 16IRB 8 NPT (1) 9.52 8.0 0.11 16.49 1.2 1.7 1 • 16IL 8 NPT 9.52 8.0 0.11 16.49 1.3 1.8 1 • • 16IR 8 NPT 9.52 8.0 0.11 16.49 1.2 1.7 1 • • • 22IR 11.5 NPT 2M (2) 12.70 11.5 0.09 22.00 2.3 3.5 2 • 27IR 11.5 NPT 3M (2) 15.88 11.5 0.09 27.50 3.3 5.5 3 • 27IR 8 NPT 2M (2) 15.88 8.0 0.12 27.50 3.1 5.0 2 • • For Insert Identification System, see pages 638-639 • National Pipe Threads ANSI/ASME B1.20.1-1983 • For technical information and detailed cutting data, see pages 711-727 (1) With pressed chipformer (2) Multi-tooth (3) Threads per inch (4) Number of teeth per corner For tools, see pages: AVC-D-SIR/L (707) • MGSIR/L (118) • PICIN-MGSIR/L (386) • SIR/L (703) 24 ±0.04 PENTA 24-NPT NPT (National Pipe Threads) Precision Ground Pentagonal External Full Profile Threading 2.4 4.5 Inserts with a Chipformer 60° RE NUT Dimensions 30° 30° 90° 1°47' SCREW Designation TPI(1) RE PENTA 24-18-NPT 18.0 0.07 • PENTA 24-14-NPT 14.0 0.09 • (1) Threads per inch For tools, see pages: PCAD RE/LE-JHP (499) • PCADR/L (316) • PCADR/L-JHP (317) • PCHBR/L (318) • PCHPR/L (316) • PCHR/L-24 (312) • PCHR/L-24-JHP (313) • PCHR/L-24-JHP-MC (313) 670 ISCAR