| BODY STYLE | ELECTRICALLY SHIELDED, PARTIAL INSULATOR, GASKET SEAT |
| USAGE DESIGN | ENGINE OTHER THAN AIRCRAFT |
| ELECTRODE STYLE | SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4) |
| THREAD SIZE AND SERIES/TYPE DESIGNATOR | 5/8-24 UNEF SHIELD |
| REACH LENGTH | 0.750 INCHES NOMINAL |
| WIDTH ACROSS FLATS | 0.802 INCHES MINIMUM AND |
| 0.817 INCHES MAXIMUM |
| SEAT MAJOR DIAMETER | 0.790 INCHES NOMINAL |
| HEIGHT ABOVE MOUNTING SURFACE | 2.500 INCHES NOMINAL |
| TOP TO TERMINAL CONTACT DISTANCE | 1.220 INCHES MINIMUM AND |
| 1.320 INCHES MAXIMUM |
| TOP TO SHIELD THREAD DISTANCE | 0.095 INCHES MINIMUM AND |
| 0.155 INCHES MAXIMUM |
| SHIELD THREAD LENGTH | 0.565 INCHES MINIMUM AND |
| 0.675 INCHES MAXIMUM |
| BARREL INSIDE DIAMETER | 0.505 INCHES MINIMUM AND |
| 0.515 INCHES MAXIMUM |
| TERMINAL SLEEVE INSIDE DIAMETER | 0.301 INCHES MINIMUM AND |
| 0.316 INCHES MAXIMUM |
| MEAN EFFECTIVE PRESSURE RATING | 275.0 POUNDS PER SQUARE INCH NOMINAL |
| DC RESISTANCE RATING IN OHMS | 2000.0 MINIMUM AND |
| 20000.0 MAXIMUM |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81348 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | WS506 |