
• Larger sizes available
| NPT1 | NPT2 | Part No. | A | B | A/F Hex |
| 1/4" NPTF | 1/8" NPTF | 4N - 2N RB | 0.750" | 0.500" | 0.562" |
| 3/8" NPTF | 1/8" NPTF | 6N - 2N RB | 0.812" | 0.562" | 0.750" |
| 3/8" NPTF | 1/4" NPTF | 6N - 4N RB | 0.812" | 0.562" | 0.750" |
| 1/2" NPTF | 1/4" NPTF | 8N - 4N RB | 1.000" | 0.687" | 0.875" |
| 1/2" NPTF | 3/8" NPTF | 8N - 6N RB | 1.000" | 0.687" | 0.875" |
| 3/4" NPTF | 1/4" NPTF | 12N - 4N RB | 1.125" | 0.750" | 1.125" |
| 3/4" NPTF | 3/8" NPTF | 12N - 6N RB | 1.125" | 0.750" | 1.125" |
| 3/4" NPTF | 1/2" NPTF | 12N - 8N RB | 1.125" | 0.750" | 1.125" |
| 1" NPTF | 1/2" NPTF | 16N - 8N RB | 1.250" | 0.875" | 1.375" |
| 1" NPTF | 3/4" NPTF | 16N - 12N RB | 1.250" | 0.875" | 1.375" |
| 1-1/4" NPTF | 1" NPTF | 20N - 16N RB | 1.343" | 0.906" | 1.750" |
| 1-1/2" NPTF | 1" NPTF | 24N - 16N RB | 1.375" | 0.937" | 2.050" |
| 1-1/2" NPTF | 1-1/4" NPTF | 24N - 20N RB | 1.375" | 0.937" | 2.050" |
| 2" NPTF | 1-1/4" NPTF | 32N - 20N RB | 1.500" | 1.062" | 2.500" |
| 2" NPTF | 1-1/2" NPTF | 32N - 24N RB | 1.500" | 1.062" | 2.500" |