The Spark Plug, cataloged under National Stock Number 2925-00-177-6969, is classified within Federal Supply Class 2925 (Engine Electrical System Components, Aircraft Prime Moving) of the Engine Accessories group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2925-00-177-6969 |
| Item Name | Spark Plug |
| FSC / FSG | 2925 / 29 — Engine Electrical System Components, Aircraft Prime Moving |
| Status | ACTIVE |
| FSC Application Data | ELECTRICALSYSTEM,AIRCRAFT |
| Width Across Flats | 0.874 INCHES NOMINAL IN |
| Top to Terminal Contact Distance | 1.500 INCHES NOMINAL IN |
| Height Above Mounting Surface | 2.500 INCHES NOMINAL IN |
| Usage Design | AIRCRAFT ENGINE |
| Electrode Style | FOUR GAP GROUND ELECTRODE |
| Body Style | ELECTRICALLY SHIELDED, PARTIAL INSULATOR, GASKET SEAT |
| DC Resistance Rating in Ohms | 700.0 NOMINAL |
| Reach Length | 0.312 INCHES NOMINAL IN |
| Seat Major Diameter | 0.960 INCHES NOMINAL IN |
| Shield Thread Length | 0.375 INCHES NOMINAL IN |
| Top to Shield Thread Distance | 0.125 INCHES NOMINAL IN |
| Terminal Sleeve Inside Diameter | 0.265 INCHES NOMINAL IN |
| Barrel Inside Diameter | 0.388 INCHES NOMINAL IN |
| Thread Size and Series/type Designator | 3/4-20 UNEF SHIELD |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MILS7886-5-6 | 2/2 Government specification standardization U.S. Government activity |
| MILS7886-5 | 5/1 Secondary reference U.S. Government activity |
| AC271S | 5/9 Secondary reference General Motors Llc Dba General Motors |
NSN 2925-00-177-6969 is a Spark Plug, classified under FSC 2925, Engine Electrical System Components, Aircraft Prime Moving. Status: active.
Key specifications for 2925-00-177-6969: FSC Application Data: ELECTRICALSYSTEM,AIRCRAFT; Width Across Flats: 0.874 INCHES NOMINAL IN; Top to Terminal Contact Distance: 1.500 INCHES NOMINAL IN; Height Above Mounting Surface: 2.500 INCHES NOMINAL IN. 15 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.