Grade TT7010 TT8010 TT9030 NPT (NATIONAL PIPE THREADS) INTERNAL - FULL PROFILE (ANSI/ASME B1.20.1-1983), REGULAR AND M-TYPE Regular Type M-Type *Right hand shown Application: Steam, Gas and Water Pipes Designation ThreadType Hand Insert IC TPI L R X YType(inch)(inch)(inch)(inch)(inch) 16IL8NPT Internal Left Regular 0.375 8 0.630 0.005 0.047 0.071 16IL11.5NPT Internal Left Regular 0.375 11.5 0.630 0.004 0.043 0.059 11IL14NPT Internal Left Regular 0.250 14 0.433 0.002 0.031 0.039 16IL14NPT Internal Left Regular 0.375 14 0.630 0.003 0.035 0.047 11IL18NPT Internal Left Regular 0.250 18 0.433 0.002 0.031 0.039 16IL18NPT Internal Left Regular 0.375 18 0.630 0.002 0.031 0.039 06IL27NPT Internal Left Regular 0.156 27 0.236 0.002 0.024 0.024 08IL27NPT Internal Left Regular 0.188 27 0.315 0.002 0.024 0.024 11IL27NPT Internal Left Regular 0.250 27 0.433 0.002 0.028 0.031 16IL27NPT Internal Left Regular 0.375 27 0.630 0.002 0.028 0.031 16IR11.5NPT Internal Right Regular 0.375 11.5 0.630 0.004 0.043 0.059 16IRM11.5NPT Internal Right M-Type 0.375 11.5 0.630 0.004 0.043 0.059 11IR14NPT Internal Right Regular 0.250 14 0.433 0.002 0.031 0.039 16IR14NPT Internal Right Regular 0.375 14 0.630 0.003 0.035 0.047 16IRM14NPT Internal Right M-Type 0.375 14 0.630 0.002 0.035 0.047 08IR18NPT Internal Right Regular 0.188 18 0.315 0.002 0.024 0.024 11IR18NPT Internal Right Regular 0.250 18 0.433 0.002 0.031 0.039 16IR18NPT Internal Right Regular 0.375 18 0.630 0.002 0.031 0.039 06IR27NPT Internal Right Regular 0.156 27 0.236 0.002 0.024 0.024 08IR27NPT Internal Right Regular 0.188 27 0.315 0.002 0.024 0.024 16IR27NPT Internal Right Regular 0.375 27 0.630 0.002 0.028 0.031 16IR8NPT Internal Right Regular 0.375 8 0.630 0.005 0.047 0.071 16IRM8NPT Internal Right M-Type 0.375 8 0.630 0.006 0.047 0.071 =P =M =K =N =S =H 1219