Thread Insert A\ # National Pipe Thread (V Style) National Pipe Thread (NPT) Type Designation(Right) Designation Pitch(Left)tpid DimensionsLhmin x f Picture Type Designation (Right) Designation Pitch(Left)tpid DimensionsLhminx f T Picture VER 11-27NPT VEL 11-27NPT 27 6.35V 11 0.66 0.7 2.0 3.2 ER 11-27NPT EL 11-27NPT 27 6.35 11 0.66 0.7 0.8 11-18NPT 11-18NPT 18 6.35V 11 1.01 0.7 1.8 3.2 11-18NPT 11-18NPT 18 6.35 11 1.01 0.8 1.0 11-14NPT 11-14NPT 14 6.35V 11 1.33 0.7 1.8 3.2 Internal 11-14NPT 11-14NPT 14 6.35 11 1.33 0.8 1.0 .Internal External 11-11.5NPT 11-11.5NPT 11.5 6.35V 11 1.64 0.7 2.1 3.2 16-27NPT 16-27NPT 27 9.525 16 0.66 0.7 0.8 16-27NPT 16-27NPT 27 9.525V 16 0.66 1.10 2.9 3.6 External 16-18NPT L16-18NPT189.525161.010.81.0 External16-18NPT16-18NPT189.525V161.011.102.63.6* External 16-14NPT 16-14NPT 14 9.525 16 1.33 0.9 1.2 16-14NPT 16-14NPT 14 9.525V 16 1.33 1.00 1.2 3.6 16-11.5NPT 16-11.5NPT 11.5 9.525 16 1.64 1.1 1.5 16-11.5 NPT 16-11.5NPT 11.5 9.525V 16 1.64 1.10 2.1 3.6 16-8NPT 16-8NPT 8 9.525 16 2.42 1.3 1.8 IR 06-27NPT IL 06-27NPT 27 3.97 6 0.66 0.6 0.6 08-27NPT 08 - 27NPT 27 4.76 8 0.66 0.6 0.6 National Pipe Thread (M+ Style) 08-18NPT 08 - 18NPT 18 4.76 8 1.01 0.6 0.6 11-27NPT 11-27NPT 27 6.35 11 0.66 0.7 0.8 .Internal11-18NPT11-18NPT186.35111.010.81.0hType Designation (Right) Designation Pitch Dimensions(Left)tpidLhminxfTooth Picture Internal 11-14NPT 11-14NPT 14 6.35 11 1.33 0.8 1.0 V47 ER 16-18NPT 2M 18 9.525 16 1.01 1.4 2.1 2 f 16-27NPT 16- 27NPT 27 9.525 16 0.66 0.7 0.8 External Internal 16-11.5NPT 2M 11.5 9.525 16 1.64 2.0 3.2 2 x 16-18NPT 16-18NPT 18 9.525 16 1.01 0.8 1.0 External 16-14NPT 2M 14 9.525 16 1.33 2.0 3.0 2 L 16-14NPT 16-14NPT 14 9.525 16 1.33 0.9 1.2 16-11.5NPT 16-11.5NPT 11.5 9.525 16 1.64 1.1 1.5 22-11.5NPT 2M 11.5 12.7 22 1.64 2.2 3.4 2 » External 27-11.5NPT 3M 11.5 15.875 27 1.64 3.5 5.6 3 16-8NPT 16- 8NPT 8 9.525 16 2.42 1.3 1.8 IR 27-8NPT 2M 8 15.875 27 2.42 3.1 4.9 2 16-18NPT 2M 18 9.525 16 1.01 1.4 2.1 2 LU =Zi Internal 16-11.5NPT 2M 11.5 9.525 16 1.64 2.0 3.2 2 d National Pipe Thread (NPT) (M Chip Breaker) 16-14NPT 2M 14 9.525 16 1.33 2.0 3.0 2 2 22-11.5NPT 2M 11.5 12.7 22 1.64 2.2 3.4 2 External Type Designation(Right) Designation Pitch(Left)tpid DimensionsLhmin x f Picture 27-11.5NPT 3M 11.5 15.875 27 1.64 3.5 5.6 327-8NPT 2M815.875272.423.14.92 =zLUi ERM 16-27NPT 27 9.525 16 0.66 0.7 0.8 R0.137 P Internalzl16 -18NPT189.525161.010.81.0bbRound DIN 405 crO External 16-14NPT 14 9.525 16 1.33 1.2 1.5 L h* »16-11.5NPT11.59.525161.641.21.5R 0.137 PExternal16 - 8 NPT89.525162.421.31.5TypeDesignation(Right)Designation Pitch(Left)tpid DimensionsLhmin x f Picture IRM 11-18NPT 18 6.35 11 1.01 0.8 1.0 LU ER 16-10RD EL 16-10RD 10 9.525 16 1.27 1.1 1.2 Z 16-27NPT 27 9.525 16 0.66 0.7 0.8 R 0.137 P Internal 55’ 16-8RD 16-8RD 8 9.525 16 1.59 1.4 1.3 R0.22104P Internal OO Internal 16-18NPT 18 9.525 16 1.01 0.8 1.0 h16-14NPT149.525161.331.21.5R 0.137 P16-11.5NPT11.59.525161.641.21.5External 16-6RDExternal 16-6RD 6 9.525 16 2.12 1.5 1.7 L22-6RD22-6RD612.7222.121.51.7 External22-4RD22-4RD412.7223.182.22.3 16-8NPT 8 9.525 16 2.42 1.3 1.5 27-4RD 27-4RD 4 15.785 27 3.18 2.2 2.3 IR 16-10RD IL 16-10RD 10 9.525 16 1.27 1.1 1.2 16-8RD 16-8RD 8 9.525 16 1.59 1.4 1.3 R0.22101P Internal 16-6RD 16-6RD 6 9.525 16 2.12 1.5 1.7 Internal 22-6RD 22-6RD 6 12.7 22 2.12 1.5 1.7 R0.22104P External 22-4RD 22-4RD 4 12.7 22 3.18 2.2 2.3 27-4RD 27-4RD 4 15.785 27 3.18 2.2 2.3 309 310