The Spark Plug, cataloged under National Stock Number 2920-00-984-4906, is classified within Federal Supply Class 2920 (Engine Electrical System Components, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Federal-Mogul Corp Government Sales Dept. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2920-00-984-4906 |
| Primary Part Number | RD-16 |
| Item Name | Spark Plug |
| FSC / FSG | 2920 / 29 — Engine Electrical System Components, Nonaircraft |
| Manufacturer | Federal-Mogul Corp Government Sales Dept |
| Status | ACTIVE |
| Width Across Flats | 0.875 INCHES NOMINAL IN |
| Height Above Mounting Surface | 2.250 INCHES NOMINAL IN |
| Usage Design | ENGINE OTHER THAN AIRCRAFT |
| Electrode Style | SINGLE "J" TYPE GROUND ELECTRODE (SEE ALSO STYLE 1 & 17) |
| Body Style | UNSHIELDED, THREADED POST, GASKET SEAT |
| Reach Length | 0.500 INCHES NOMINAL IN |
| Seat Major Diameter | 0.870 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| RD-16 PRIMARY | Federal-Mogul Corp Government Sales Dept (USA) |
| Reference | Meaning |
|---|---|
| RD-16J | 5/9 Secondary reference Champion Aerospace Llc |
| RD-16H | 5/9 Secondary reference Champion Aerospace Llc |
| RD-16H | 5/9 Secondary reference Champion Aviation Inc Automotive Div |
| XD16J | 5/9 Secondary reference Champion Aerospace Llc |
| RD-16 | 5/9 Secondary reference Champion Aviation Inc Automotive Div |
NSN 2920-00-984-4906 is a Spark Plug, manufactured by Federal-Mogul Corp Government Sales Dept, classified under FSC 2920, Engine Electrical System Components, Nonaircraft. Status: active.
NSN 2920-00-984-4906 has 1 manufacturer part number on file: RD-16 (Federal-Mogul Corp Government Sales Dept).
Key specifications for RD-16: Width Across Flats: 0.875 INCHES NOMINAL IN; Height Above Mounting Surface: 2.250 INCHES NOMINAL IN; Usage Design: ENGINE OTHER THAN AIRCRAFT; Electrode Style: SINGLE "J" TYPE GROUND ELECTRODE (SEE ALSO STYLE 1 & 17). 7 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.