| AAQL | Body Style | Unshielded, solid or threaded post, gasket seat |
| AFYV | DC Resistance Rating in Ohms | 10000.0 nominal |
| AHPM | Reach Length | 0.750 inches nominal |
| ALBY | Usage Design | Engine other than aircraft |
| ASDB | Width Across Flats | 0.812 inches nominal |
| AYGA | Electrode Style | Single flat shell ground electrode (see also style 4) |
| AYGF | Mean Effective Pressure Rating | 260.0 pounds per square inch minimum and 270.0 pounds per square inch maximum |
| AYGH | Seat Major Diameter | 0.8125 inches maximum |
| AYGJ | Height Above Mounting Surface | 2.210 inches nominal |
| FEAT | Special Features | With shell thd 0.375 in. lg, standard tip style series; may have threaded post |
| TEST | Test Data Document | 81348-WS506 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "nominal", etc.). |
| ZZZT | Nondefinitive Spec/STD Data | 3 type and a class |