NSN 2920-00-580-4931
Part Details | SPARK PLUG
2920-00-580-4931 An item containing two or more electrodes across which an electric spark is discharged to ignite a fuel and air mixture, primarily in internal combustion engines. Excludes GLOW PLUG; and ELECTRODE.
Alternate Parts: SH20A, SH20A, 2920-00-580-4931, 00-580-4931, 2920005804931, 005804931
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 29 | JAN 01, 1963 | 00-580-4931 | 00294 ( SPARK PLUG ) |
REFERENCE DRAWINGS & PICTURES
ELECTRICALLY SHIELDED, PARTIAL INSULATOR, GASKET SEAT
SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4)
Cross Reference | NSN 2920-00-580-4931
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| SH20A | 52970 | ALLIED-SIGNAL INCAUTOLITE DIV |
| SH20A | 14170 | HUGHES MISSILE SYSTEMS COSAN DIEGO |
Technical Data | NSN 2920-00-580-4931
| Characteristic | Specifications |
|---|---|
| BODY STYLE | ELECTRICALLY SHIELDED, PARTIAL INSULATOR, GASKET SEAT |
| REACH LENGTH | 0.527 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.870 INCHES MINIMUM AND 0.878 INCHES MAXIMUM |
| SEAT MAJOR DIAMETER | 0.965 INCHES NOMINAL |
| HEIGHT ABOVE MOUNTING SURFACE | 2.500 INCHES MINIMUM AND 2.624 INCHES MAXIMUM |
| TOP TO TERMINAL CONTACT DISTANCE | 1.000 INCHES MINIMUM AND 1.070 INCHES MAXIMUM |
| TOP TO SHIELD THREAD DISTANCE | 0.120 INCHES NOMINAL |
| SHIELD THREAD LENGTH | 0.250 INCHES NOMINAL |
| BARREL INSIDE DIAMETER | 0.459 INCHES MINIMUM AND 0.479 INCHES MAXIMUM |
| TERMINAL SLEEVE INSIDE DIAMETER | 0.378 INCHES MINIMUM AND 0.388 INCHES MAXIMUM |
| ELECTRODE STYLE | 3 SINGLE FLAT SHELL GROUND ELECTRODE (SEE ALSO STYLE 4) |
| THREAD SIZE AND SERIES/TYPE DESIGNATOR AND LOCATION | 18-1.5MM BASE AND 5/8-24 UNEF SHIELDING |
| DC RESISTANCE RATING IN OHMS | 1000.0 NOMINAL |
| USAGE DESIGN | AIRCRAFT ENGINE |
| SPECIAL FEATURES | ITEM IS USED ON ARMY TRUCKS |