| ELECTRODE STYLE | SINGLE PUSH-SHELL GROUND ELECTRODE |
| BODY STYLE | ELECTRICALLY SHIELDED, FULL INSULATOR, GASKET SEAT |
| HEIGHT ABOVE MOUNTING SURFACE | 2.250 INCHES NOMINAL |
| REACH LENGTH | 0.500 INCHES NOMINAL |
| SEAT MAJOR DIAMETER | 0.938 INCHES NOMINAL |
| SHIELD THREAD LENGTH | 0.250 INCHES NOMINAL |
| WIDTH ACROSS FLATS | 0.875 INCHES NOMINAL |
| TERMINAL SLEEVE INSIDE DIAMETER | 0.378 INCHES MINIMUM AND 0.386 INCHES MAXIMUM |
| THREAD SIZE AND SERIES/TYPE DESIGNATOR | 5/8-24 UNEF SHIELD |
| TOP TO SHIELD THREAD DISTANCE | 0.125 INCHES NOMINAL |
| TOP TO TERMINAL CONTACT DISTANCE | 1.000 INCHES MINIMUM AND 1.070 INCHES MAXIMUM |
| USAGE DESIGN | ENGINE OTHER THAN AIRCRAFT |