| ELECTRODE STYLE | SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4) |
| BARREL INSIDE DIAMETER | 0.505 INCHES MINIMUM AND 0.515 INCHES MAXIMUM |
| BODY STYLE | ELECTRICALLY SHIELDED, PARTIAL INSULATOR, GASKET SEAT |
| DC RESISTANCE RATING IN OHMS | 2000.0 MINIMUM AND 20000.0 MAXIMUM |
| HEIGHT ABOVE MOUNTING SURFACE | 2.500 INCHES NOMINAL |
| PRESSURE RATING | 275.0 POUNDS PER SQUARE INCH NOMINAL MEAN EFFECTIVE |
| REACH LENGTH | 0.750 INCHES NOMINAL |
| SEAT MAJOR DIAMETER | 0.790 INCHES NOMINAL |
| SHIELD THREAD LENGTH | 0.565 INCHES MINIMUM AND 0.675 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.802 INCHES MINIMUM AND 0.817 INCHES MAXIMUM |
| TERMINAL SLEEVE INSIDE DIAMETER | 0.301 INCHES MINIMUM AND 0.316 INCHES MAXIMUM |
| THREAD SIZE AND SERIES/TYPE DESIGNATOR | 5/8-24 UNEF SHIELD |
| TOP TO SHIELD THREAD DISTANCE | 0.095 INCHES MINIMUM AND 0.155 INCHES MAXIMUM |
| TOP TO TERMINAL CONTACT DISTANCE | 1.220 INCHES MINIMUM AND 1.320 INCHES MAXIMUM |
| USAGE DESIGN | ENGINE OTHER THAN AIRCRAFT |