The Case Assembly,ignition Exciter, cataloged under National Stock Number 2925-01-022-8330, is classified within Federal Supply Class 2925 (Engine Electrical System Components, Aircraft Prime Moving) of the Engine Accessories group. The manufacturer of record is Unison Industries Llc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2925-01-022-8330 |
| Primary Part Number | 118155 |
| Item Name | Case Assembly,ignition Exciter |
| FSC / FSG | 2925 / 29 — Engine Electrical System Components, Aircraft Prime Moving |
| Manufacturer | Unison Industries Llc |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY,RECTANGULAR SHAPE 8.500 IN. LG IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 118155 PRIMARY | Unison Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| 118155 | 5/9 Secondary reference U.S. Government activity |
NSN 2925-01-022-8330 is a Case Assembly,ignition Exciter, manufactured by Unison Industries Llc, classified under FSC 2925, Engine Electrical System Components, Aircraft Prime Moving. Status: active.
NSN 2925-01-022-8330 has 1 manufacturer part number on file: 118155 (Unison Industries Llc).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-550-2959. Verify interchangeability with system specifications before substitution.
Key specifications for 118155: General Characteristics Item Description: ALUMINUM ALLOY,RECTANGULAR SHAPE 8.500 IN. LG IN; End Item Identification: ACFT EXCITER P/N 4049295. 1 specification is 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.
NSN 2925-01-022-8330 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.