The Flange,exhaust Pipe, cataloged under National Stock Number 2990-00-417-2878, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Fwd Seagrave Holdings Lp. Government technical data includes 3 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 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 | 2990-00-417-2878 |
| Primary Part Number | 331267 |
| Item Name | Flange,exhaust Pipe |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Fwd Seagrave Holdings Lp |
| Status | ACTIVE |
| Flange Diameter | 3.000 INCHES NOMINAL IN |
| Flange Length | 1.310 INCHES NOMINAL IN |
| Material | STEEL |
| 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 |
|---|---|
| 331267 PRIMARY | Fwd Seagrave Holdings Lp (USA) |
NSN 2990-00-417-2878 is a Flange,exhaust Pipe, manufactured by Fwd Seagrave Holdings Lp, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-00-417-2878 has 1 manufacturer part number on file: 331267 (Fwd Seagrave Holdings Lp).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-290-9264, 5985-01-410-7820. Verify interchangeability with system specifications before substitution.
Key specifications for 331267: Flange Diameter: 3.000 INCHES NOMINAL IN; Flange Length: 1.310 INCHES NOMINAL IN; Material: STEEL. 3 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.