The Resonator,exhaust,box Assy, cataloged under National Stock Number 2990-01-079-9690, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-079-9690 |
| Item Name | Resonator,exhaust,box Assy |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Status | ACTIVE |
| FSC Application Data | MISCELLANEOUS ENGINE ACCESSORIES,NONAIRCRAFT |
| General Characteristics Item Description | CONTAINS COVER PAD 89343,HEAT SHIELD 89346,COVER 88995,INTERNAL COMPONENTS,RESONATOR BOX 88996-3,EXHAUST CONE ASSY 88996-2,RESONATOR BOX 88994 |
| 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 |
|---|---|
| 88998 | 3/9 Design control — primary reference U.S. Government activity |
NSN 2990-01-079-9690 is a Resonator,exhaust,box Assy, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 3455-01-156-9717, 5955-01-202-5026, 4720-01-592-9222. Verify interchangeability with system specifications before substitution.
Key specifications for 2990-01-079-9690: FSC Application Data: MISCELLANEOUS ENGINE ACCESSORIES,NONAIRCRAFT; General Characteristics Item Description: CONTAINS COVER PAD 89343,HEAT SHIELD 89346,COVER 88995,INTERNAL COMPONENTS,RESONATOR BOX 88996-3,EXHAUST CONE ASSY 88996-2,RESONATOR BOX 88994; End Item Identification: PRESSURIZED CABIN TESTER,P/N 88998,4920-00-347-9455. 2 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.