Spécification
| Forme de fil | Unified National |
| Diamètre de filetage | 0.50 inch / 12.70 mm |
| Thread Class | 2A |
| Pas de filetage | 20.00 threads Per Inch |
| Hauteur | 0.48 inch / 12.09 mm |
| Applicable Region | North America, China, Europe, South America, South East Asia, South Pacific |

