The Cap Assembly,protective,muffler-, cataloged under National Stock Number 2990-01-203-4837, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Mercury Products Corp. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-203-4837 |
| Primary Part Number | FB0087 |
| Item Name | Cap Assembly,protective,muffler- |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Mercury Products Corp |
| Status | ACTIVE |
| Pipe Outside Diameter Accommodated | 3.000 INCHES IN |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| FB0087 | Mercury Products Corp (USA) |
| Reference | Meaning |
|---|---|
| 298-5014-92 | 5/9 Secondary reference Rexworks Inc |
| 298-5014-92 | 3/9 Design control — primary reference Maxon Industries, Inc. |
NSN 2990-01-203-4837 is a Cap Assembly,protective,muffler-, manufactured by Mercury Products Corp, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-203-4837 has 1 manufacturer part number on file: FB0087 (Mercury Products Corp).
Key specifications for FB0087: Pipe Outside Diameter Accommodated: 3.000 INCHES IN; End Item Identification: 3895-01-141-0882; Material: STEEL CORROSION RESISTING. 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.