The Case Section,sound Reduction,eng, cataloged under National Stock Number 2990-01-620-4850, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Onan Corp Onan Power/electronics Div. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2990-01-620-4850 |
| Primary Part Number | 405-9610 |
| Item Name | Case Section,sound Reduction,eng |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Onan Corp Onan Power/electronics Div |
| Status | ACTIVE |
| 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 |
|---|---|
| 405-9610 PRIMARY | Onan Corp Onan Power/electronics Div (USA) |
| Reference | Meaning |
|---|---|
| 405-5081 | 5/9 Secondary reference Onan Corp Onan Power/electronics Div |
| 405-5081 | 3/9 Design control — primary reference Onan Corporation Dba Onan Indiana |
NSN 2990-01-620-4850 is a Case Section,sound Reduction,eng, manufactured by Onan Corp Onan Power/electronics Div, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-620-4850 has 1 manufacturer part number on file: 405-9610 (Onan Corp Onan Power/electronics Div).
1 possible match (shared part number, not a government interchangeability claim): 5970-01-685-4300. Verify interchangeability with system specifications before substitution.
Key specifications for 405-9610: Part Name Assigned by Controlling Agency: SOUND CONTROLLING BATT; End Item Identification: 6115-01-611-8093. 0 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.