| ELECTRODE STYLE | SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4) |
| BARREL INSIDE DIAMETER | 0.510 INCHES NOMINAL |
| BODY STYLE | ELECTRICALLY SHIELDED, PARTIAL INSULATOR, GASKET SEAT |
| DC RESISTANCE RATING IN OHMS | 7500.0 MINIMUM AND 12500.0 MAXIMUM |
| HEIGHT ABOVE MOUNTING SURFACE | 2.625 INCHES NOMINAL |
| PRESSURE RATING | 155.0 POUNDS PER SQUARE INCH NOMINAL MEAN EFFECTIVE |
| REACH LENGTH | 0.375 INCHES NOMINAL |
| SEAT MAJOR DIAMETER | 0.812 INCHES NOMINAL |
| SHIELD THREAD LENGTH | 0.375 INCHES NOMINAL |
| WIDTH ACROSS FLATS | 0.812 INCHES NOMINAL |
| TERMINAL SLEEVE INSIDE DIAMETER | 0.306 INCHES NOMINAL |
| 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 | 1.870 INCHES NOMINAL |
| USAGE DESIGN | ENGINE OTHER THAN AIRCRAFT |