TN 121 Plug HEX Head 121
| TN 121-05 | 1/16 NPT, CORED |
| TN 121-10 | 1/8 NPT, CORED |
| TN 121-20 | 1/4 NPT, CORED |
| TN 121-30 | 3/8 NPT, CORED |
| TN 121-40 | 1/2 NPT, CORED |
| TN 121-60 | 3/4 NPT, CORED |
| TN 121-80 | 1 NPT, CORED |
| TN 121S-10 | 1/8 NPT, SOLID |
| TN 121S-20 | 1/4 NPT, SOLID |
| TN 121S-30 | 3/8 NPT, SOLID |
| TN 121S-40 | 1/2 NPT, SOLID |
| TN 121S-60 | 3/4NPT, SOLID |