| BODY STYLE | ELECTRICALLY SHIELDED, PARTIAL INSULATOR, GASKET SEAT |
| USAGE DESIGN | ENGINE OTHER THAN AIRCRAFT |
| ELECTRODE STYLE | SINGLE "J" TYPE GROUND ELECTRODE (SEE ALSO STYLE 1 & 17) |
| THREAD SIZE AND SERIES/TYPE DESIGNATOR | 5/8-24 UNEF SHIELD |
| REACH LENGTH | 0.375 INCHES NOMINAL |
| WIDTH ACROSS FLATS | 0.812 INCHES NOMINAL |
| SEAT MAJOR DIAMETER | 0.812 INCHES NOMINAL |
| HEIGHT ABOVE MOUNTING SURFACE | 2.734 INCHES NOMINAL |
| TOP TO TERMINAL CONTACT DISTANCE | 1.000 INCHES MINIMUM AND |
| 1.050 INCHES MAXIMUM |
| TOP TO SHIELD THREAD DISTANCE | 0.125 INCHES NOMINAL |
| SHIELD THREAD LENGTH | 0.250 INCHES NOMINAL |
| BARREL INSIDE DIAMETER | 0.463 INCHES MINIMUM AND |
| 0.468 INCHES MAXIMUM |
| TERMINAL SLEEVE INSIDE DIAMETER | 0.378 INCHES MINIMUM AND |
| 0.386 INCHES MAXIMUM |
| MEAN EFFECTIVE PRESSURE RATING | 160.0 POUNDS PER SQUARE INCH MINIMUM AND |
| 180.0 POUNDS PER SQUARE INCH MAXIMUM |