| Thread diameter in mm | B 14 |
| Hex key in mm | 20.8 |
| Screw thread in mm | 1.25 |
| Internal construction | P isolant proéminent, R résistance intégrée |
| Thermal index | 6 |
| Thread length in mm | E 19 |
| Drawing of the spark gap | S électrode centrale en cuivre |
| Electrode spacing in mm | 0.7 à 0.8 |