
HI Thread Insert Thread Insert HI
British Standard Pipe Thread ( BSPT) National Pipe Thread ( NPT)
Pitch Dimensions Pitch Dimensions
CD 0
CL Designation Designation CL Designation Designation
Picture Picture
(Right) ( Left ) (tpi) d L hmin x f (Right) ( Left ) (tpi) d L hmin x f
ER 11 - 28BSPT EL 11 28BSPT
- 28 6.35 11 0.58 0.6 0.6 ER 11 - 27NPT EL 11 - 27NPT 27 6.35 11 0.66 0.7 0.8
11 19BSPT
- 11 - 19BSPT 19 6.35 11 0.86 0.8 0.9 11 - 18NPT 11 - 18NPT 18 6.35 11 1.01 0.8 1.0
11 - 14BSPT 11 14BSPT
- 14 6.35 11 1.16 0.9 1.0 R 0.137 P Internal 11 - 14NPT 11 - 14NPT 14 6.35 11 1.33 0.8 1.0
CD
c
27.93 27.93 CD
c
16 - 28BSPT 16 - 28BSPT 28 9.525 16 0.58 0.6 0.6 16 - 27NPT 16 - 27NPT 27 9.525 16 0.66 0.7 0.8
0 0 L
L
x 16 - 19BSPT 16 19BSPT
- 19 9.525 16 0.86 0.8 0.9 x 16 - 18NPT 16 - 18NPT 18 9.525 16 1.01 0.8 1.0
LU LU
16 - 14BSPT 16 - 14BSPT 14 9.525 16 1.16 1.0 1.2 903. / R 0.137 F 16 - 14NPT 16 - 14NPT 14 9.525 16 1.33 0.9 1.2
Externa
16 - 11 BSPT 16 - 11 BSPT 11 9.525 16 1.48 1.1 1.5 16 - 11.5NPT 16 - 11.5NPT 11.5 9.525 16 1.64 1.1 1.5
16 - 8NPT 16 - 8NPT 8 9.525 16 2.42 1.3 1.8
IR 11 - 28BSPT IL 11 - 28BSPT 28 6.35 11 0.58 0.6 0.6 IR 11 - 27 NPT IL 11 - 27NPT 27 6.35 11 0.66 0.7 0.8
11 - 19BSPT 11 - 19BSPT 19 6.35 11 0.86 0.8 0.9 f 11 - 18NPT 11 - 18NPT 18 6.35 11 1.01 0.8 1.0
x x
11 - 14BSPT 11 - 14BSPT 14 6.35 11 1.16 0.9 1.0 11 - 14NPT 11 - 14NPT 14 6.35 11 1.33 0.8 1.0
CD R 0.137 P Internal CD
c c
16 - 28BSPT 16 - 28BSPT 28 9.525 16 0.58 0.6 0.6 27.93 27.53 16 - 27NPT 16 - 27NPT 27 9.525 16 0.66 0.7 0.8
0 0
c 16 - 1 9BSPT 16 - 19BSPT 19 9.525 16 0.86 0.8 0.9 L c 16 - 18NPT 16 - 18NPT 18 9.525 16 1.01 0.8 1.0
16 - 14BSPT 16 - 14BSPT 14 9.525 16 1.16 1.0 1.2 / R 0.137 F 16 - 14NPT 16 - 14NPT 14 9.525 16 1.33 0.9 1.2
9 - Nfcf
16 - 11 BSPT 16 - 11 BSPT 11 9.525 16 1.48 1.1 1.5
^ Externa
16 - 11.5NPT
16 - 8NPT
16 - 11.5NPT
16 - 8NPT
11.5
8
9.525
9.525
16
16
1.64
2.42
1.1
1.3
1.5
1.8
037 038
National Pipe Thread (V Style)
Pitch Dimensions
0
Q. Designation Designation Picture
(Right) ( Left ) (tpi) d L hmin x f t
British Standard Pipe Thread (V Style)
VER 11 - 27NPT VEL 11 - 27NPT 27 6.35 11 0.66 0.70 2.0 3.2
Pitch Dimensions
0 11 - 18NPT 11 - 18NPT 18 6.35 11 1.01 0.70 1.8 3.2
Q. Designation Designation CD
Picture c
(Right) ( Left ) ( tpi) d L hmin x f t 11 - 14NPT 11 - 14NPT 14 6.35 11 1.33 0.70 1.8 3.2
0
x 16 - 27NPT 16 - 27NPT 27 9.525 16 0.66 1.10 2.9 3.6
LU
VER 16 - 28BSPT VEL 16 - 28BSPT 28 9.525 16 0.58 1.10 3.0 3.6 16 - 18NPT 16 - 18NPT 18 9.525 16 1.01 1.10 2.6 3.6
CD
c 16 - 19BSPT 16 - 19BSPT 19 9.525 16 0.86 1.10 2.7 3.6 16 - 11.5NPT 16 - 11.5NPT 11.5 9.525 16 1.64 1.10 2.1 3.6 t
0
x 16 - 14BSPT 16 - 14BSPT 14 9.525 16 1.16 1.10 2.4 3.6
LU
16 - 11 BSPT 16 - 11 BSPT 11 9.525 16 1.48 1.10 2.1 3.6
1" 47’ / RD. 137P
Externa
*