Grade P30 TT9030 NPTF (NATIONAL PIPE THREAD - DRY SEAL) EXTERNAL - FULL PROFILE (ANSI/ASME B1.20.3-1976) Regular Type Application: Steam, Gas and Water Pipes *Right hand shown Designation ThreadType Hand InsertType IC TPI L X Y(inch)(inch)(inch)(inch) 11EL14NPTF External Left Regular 0.250 14 0.433 0.031 0.039 11EL18NPTF External Left Regular 0.250 18 0.433 0.031 0.039 11EL27NPTF External Left Regular 0.250 27 0.433 0.028 0.028 16EL11.5NPTF External Left Regular 0.375 11.5 0.630 0.043 0.059 16EL14NPTF External Left Regular 0.375 14 0.630 0.035 0.047 16EL18NPTF External Left Regular 0.375 18 0.630 0.031 0.039 16EL27NPTF External Left Regular 0.375 27 0.630 0.028 0.028 16EL8NPTF External Left Regular 0.375 8 0.630 0.051 0.071 11ER14NPTF External Right Regular 0.250 14 0.433 0.031 0.039 11ER18NPTF External Right Regular 0.250 18 0.433 0.031 0.039 11ER27NPTF External Right Regular 0.250 27 0.433 0.028 0.028 16ER8NPTF External Right Regular 0.375 8 0.630 0.051 0.071 16ER11.5NPTF External Right Regular 0.375 11.5 0.630 0.043 0.059 16ER14NPTF External Right Regular 0.375 14 0.630 0.035 0.047 16ER18NPTF External Right Regular 0.375 18 0.630 0.031 0.039 16ER27NPTF External Right Regular 0.375 27 0.630 0.028 0.028 =P =M =K =N =S =H 1220