| Thread diameter in mm | C 10 |
| Hex key in mm | 16 |
| Screw thread in mm | 1.00 |
| Internal construction | P isolant proéminent, R résistance intégrée |
| Thermal index | 8 |
| Thread length in mm | E 19 |
| Drawing of the spark gap | A, B, C, D, E dessin spécial, IX Gamme iridium IX |
| Electrode spacing in mm | 0.7 à 0.8 |